阅读说明：本技术 一种高强度高阻尼CuAlMn形状记忆合金的制备方法 (A kind of preparation method of high-intensity high-damping CuAlMn marmem ) 是由 王清周 焦志娴 刘亚飞 牛浩源 崔春翔 殷福星 张建军 姚畅 于 2019-10-14 设计创作，主要内容包括：本发明一种高强度高阻尼CuAlMn形状记忆合金的制备方法,涉及用熔炼法使用母(中间)合金制造有色金属合金,是一种槽型轧制的工艺,步骤是：将CN105568019B制得的CuAlMn形状记忆合金原料置入温度为830℃～880℃的箱式炉中固溶处理12～17分钟；然后送入槽型轧制机的轧辊之间,沿该合金长度方向进行1～8道次的槽型轧制,最后一道次轧制结束后,再在同一轧槽中进行一次槽型轧制,然后将该合金样品置入0℃～27℃的水中进行淬火处理,由此制得高强度高阻尼的Cu-11.9Al-2.5Mn形状记忆合金,克服了现有技术制得的CuAlMn形状记忆合金所存在的微区疏松、孔洞和偏析的铸造缺陷。(A kind of preparation method of high-intensity high-damping CuAlMn marmem of the present invention, it is related to manufacturing non-ferrous alloy using female (centre) alloy with smelting process, it is a kind of technique of groove profile rolling, step is: solution treatment 12~17 minutes in the batch-type furnace for being 830 DEG C~880 DEG C by the merging temperature of CuAlMn raw shape memory alloy made from CN105568019B；It is then fed between the roll of groove profile roll mill, the groove profile rolling of 1~8 passage is carried out along the alloy length direction, after last passes, a groove profile rolling is carried out in same groove again, then the alloy sample is placed in 0 DEG C~27 DEG C of water and is quenched, thus the Cu-11.9Al-2.5Mn marmem of high-intensity high-damping is made, overcomes loose microcell present in CuAlMn marmem made from the prior art, hole and the casting flaw of segregation.)

1. a kind of preparation method of high-intensity high-damping CuAlMn marmem, it is characterised in that: be a kind of groove profile rolling Technique, the specific steps are as follows:

The first step, solution treatment:

The batch-type furnace for being 830 DEG C~880 DEG C by the merging temperature of CuAlMn raw shape memory alloy made from CN105568019B Middle solution treatment 12~17 minutes；

Second step, groove profile rolling and quenching treatment:

CuAlMn marmem made from CN105568019B after above-mentioned first step solution treatment is taken from batch-type furnace Out, it is sent between the roll of groove profile roll mill, the groove profile rolling of 1~8 passage, the alloy sample is carried out along the alloy length direction Total deformation is 20%~80%, after last passes, then carries out a groove profile rolling in same groove, then will The alloy sample is placed in 0 DEG C~27 DEG C of water and is quenched, and the Cu-11.9Al- of high-intensity high-damping is thus made 2.5Mn marmem.

2. a kind of preparation method of high-intensity high-damping CuAlMn marmem, feature exist according to claim 1 In: during the groove profile rolling, heat preservation is melted down 5~8 minutes after 3 passes of every progress.

3. a kind of preparation method of high-intensity high-damping CuAlMn marmem, feature exist according to claim 1 In: the Cu-11.9Al-2.5Mn marmem of the high-intensity high-damping obtained, tensile strength are up to 1015.92 MPa, damping up to 0.03987.

Technical field

Technical solution of the present invention is related to manufacturing non-ferrous alloy using female (centre) alloy with smelting process, specifically It is a kind of preparation method of high-intensity high-damping CuAlMn marmem.

Background technique

CuAlMn marmem is as a kind of completely new functional material, and not only cheap processing performance is good, but also It is various in modern industry and production and life from being solved on source with high damping capacity and excellent shape memory effect One of equipment and the best candidate materials of instrument vibration and noise problem suffer from very military with civilian every field Broad application prospect.However, there are still because grain boundary fracture and mechanics easily occurs caused by coarse grains at present for such alloy The relatively low deficiency of performance.Therefore, its is made to refine crystal grain by necessary means, to widen the application model of CuAlMn marmem Farmland is extremely urgent.

Up to now, people include rapid solidification method, inovulant for the main means of metal material crystal grain refinement Refinement method, powder metallurgic method, thermomechanical process and mechanical oscillation and sonic oscillation method.Wherein, inovulant refinement method is because of tool There is simple to operation, thinning effect to become apparent compared with other methods, and prepared product has the advantages that not limited by size And become a kind of method of the most commonly used crystal grain refinement.CN105568019B discloses a kind of CuAlMn marmem The thinning method of crystal grain is to utilize inovulant Cu₅₁Zr₁₄Modifying-refining effect to the crystal grain of CuAlMn marmem into Row refinement；And CN107916348B discloses the preparation method of fine grain CuAlMn marmem, is by novel Al base LaScB inovulant refines the crystal grain of CuAlMn marmem.However it utilizes obtained by the above prior art CuAlMn marmem still has the casting flaw of loose microcell, hole and component segregation.CN103421981A is disclosed High-damping marmem is by adding microelement Ni, Ti, Co and rare earth in CuAlMn marmem Elements C e, Gd, Y, and adjust its additive amount to reach thinning microstructure improve the intensity of material, stability, corrosion resistance, resistance to tired The purpose of the mechanical properties such as labor and super-elasticity, however the technology does not also propose equally to eliminate the casting of CuAlMn marmem The specific technical solution of defect.CN102758097B discloses a kind of low-aluminium high-manganese CuAlMn low temperature memorial alloy, the technology system A kind of technology of preparing of low temperature marmem is disclosed to meet low temperature use demand, obtained alloy is simultaneously not content with To the application demand of vibration and noise reducing.

Summary of the invention

The technical problems to be solved by the present invention are: providing a kind of system of high-intensity high-damping CuAlMn marmem Preparation Method proposes a kind of process of groove profile rolling, overcomes CuAlMn shape made from prior art CN105568019B Microcell present in shape memory alloys is loose, hole and segregation casting flaw, so that existing CuAlMn marmem Mechanical property and damping capacity are significantly improved.

The present invention solves technical solution used by the technical problem: a kind of high-intensity high-damping CuAlMn shape memory The preparation method of alloy is a kind of technique of groove profile rolling, the specific steps are as follows:

The first step, solution treatment:

The case for being 830 DEG C~880 DEG C by the merging temperature of CuAlMn raw shape memory alloy made from CN105568019B Solution treatment 12~17 minutes in formula furnace；

Second step, groove profile rolling and quenching treatment:

By CuAlMn marmem made from the CN105568019B after above-mentioned first step solution treatment from batch-type furnace Middle taking-up is sent between the roll of groove profile roll mill, and the groove profile rolling of 1~8 passage, the alloy are carried out along the alloy length direction Sample total deformation is 20%~80%, after last passes, then a groove profile rolling is carried out in same groove, Then the alloy sample is placed in 0 DEG C~27 DEG C of water and is quenched, the Cu- of high-intensity high-damping is thus made 11.9Al-2.5Mn marmem.

A kind of preparation method of above-mentioned high-intensity high-damping CuAlMn marmem, during the groove profile rolling, when Heat preservation is melted down 5~8 minutes after 3 passes of every progress.

A kind of preparation method of above-mentioned high-intensity high-damping CuAlMn marmem, the high-intensity high obtained The Cu-11.9Al-2.5Mn marmem of Buddhist nun, tensile strength are up to 1015.92MPa, and damping is up to 0.03987。

A kind of preparation method of above-mentioned high-intensity high-damping CuAlMn marmem, related CN105568019B CuAlMn raw shape memory alloy obtained and equipment be it is well-known in the art, related operating method is this technology What the technical staff in field will appreciate that.

The beneficial effects of the present invention are: compared with prior art, a kind of high-intensity high-damping CuAlMn shape note of the present invention The preparation method for recalling alloy has substantive distinguishing features outstanding and marked improvement as follows:

(1) invention introduces groove profile rolling technique, CuAlMn shape memory alloy specimen during high temperature deformation, Dynamic buy back policy can occur, so that the tissue and crystal grain of the CuAlMn marmem that inovulant had refined Become more tiny.Also, CuAlMn shape memory alloy specimen in the groove profile operation of rolling from all directions uniform stressed, greatly Amount of plastic deformation and high hot-rolled temperature can make micro-flaw inside CuAlMn shape memory alloy specimen and loose With healing, to effectively eliminate casting flaw, high consistency is obtained, has the function of significantly enhancing matrix.

(2) the method for the present invention above by groove profile rolling mill practice in addition to making made from prior art CN105568019B Microcell present in CuAlMn marmem is loose, the hole and casting flaw of segregation is eliminated, crystal grain obtains more effectively It refines and improves outside its intensity, with the reduction of groove profile rolling temperature in the groove profile operation of rolling, tiny that is precipitated therewith Two-phase particle can also generate pinning effect to crystal boundary, inhibit growing up for recrystal grain, improve CuAlMn marmem Thermal stability and mechanical property, while can also play the role of dispersion-strengtherning in the base, so that CuAlMn shape The mechanical property of memorial alloy obtains further raising, is up to the tensile strength of CuAlMn marmem To 1015.92MPa, much higher than the up to 721.14MPa of CuAlMn marmem prepared by CN105568019B technology Tensile strength, obtain unexpected technical effect.

(3) in the method for the present invention inovulant refinement CuAlMn marmem crystal grain, tissue further show The precipitation for writing the second phase dispersed and tiny in refinement and the operation of rolling, can dramatically increase the quantity at interface, including martensite Between boundary during interface and twin-plane boundary, phase transition between martensitic phase and female interphase interface and Second Phase Particle and matrix Face.These interfaces can efficiently consume energy outside plus under alternating load, so that CuAlMn marmem has High damping capacity.It is up to using CuAlMn marmem made from the method for the present invention in the damping value of near room temperature 0.03978, it is apparently higher than up to 0.0264 of CuAlMn marmem prepared by CN105568019A disclosure technology Damping value.The method of the present invention obtains the mechanical property of CuAlMn marmem simultaneously with damping capacity significantly to mention Height, thus CuAlMn marmem prepared by the present invention has even more important engineering application value.

(4) Processes and apparatus of the method for the present invention is simple, at low cost, it is easy to accomplish large-scale production.

(5) " a kind of thinning method of CuAlMn marmem crystal grain of CN105568019B " and " CN107916348B The preparation method of fine grain CuAlMn marmem " is the previous patented technology of inventor team, though they pass through The mode of addition inovulant realizes the refinement of CuAlMn marmem crystal grain, but what these technologies used is all tradition Casting technique, and casting technique will can generate the casting flaws such as loose microcell, hole and segregation, this is for alloy property Raising have a serious impact, therefore want to realize that CuAlMn marmem comprehensive performance further increases, need Casting flaw is eliminated using new technology, casting technique adverse effect is solved with this.Eliminate casting in this field The traditional handicraft of defect is hot rolling, however the refining alloy that breeds for the purpose of damping and intensity improves is not used but usually The technique, because the dynamic recrystallization in hot rolling probably will cause the roughening again for having refined crystal grain.In order to overcome in reality Trample loose, hole and segregation the casting with microcell present in CuAlMn marmem made from the above method in application Defect, inventor team create the work for introducing groove profile rolling by hardships experiment and research and development in nearly 2 years finally Skill, i.e., on the basis of breeding refinement, the technique that groove profile rolling is used to CuAlMn marmem, so that alloy each side The passage that suitable solid solubility temperature and time, groove profile roll finally has been determined to uniform stressed, and by a large amount of arduous experiment With melted down in time after total deformation, multi- pass rolling after time of heat preservation and heat preservation, last passes again in same groove Groove profile rolling of middle progress and slot roll the processes such as the temperature for being directly quenched and being handled afterwards and ginseng Number, is not roughened the crystal grain of alloy not only and does not obtain further refinement instead, overcome made from the prior art Microcell present in CuAlMn marmem is loose, hole and segregation casting flaw, so that existing CuAlMn shape is remembered The mechanical property and damping capacity for recalling alloy are significantly improved.In the prior art CN105568019B and CN107916348B On the basis of in conjunction with this field common knowledge or conventional technical means come obtain present technical solution of the present invention be definitely not this What field technical staff can obtain easily.

In addition, the present invention achieves unexpected technical effect: the present inventor team discovery, it is right After CuAlMn marmem made from CN105568019B carries out groove profile rolling, not only crystal grain becomes more tiny, casting Defect is effectively eliminated, and tiny Second Phase Particle has also been precipitated in alloy substrate, these particles being capable of pinning Crystal boundary is grown up with inhibition recrystal grain, while playing the role of dispersion-strengtherning in the base, so that CuAlMn shape The thermal stability of memorial alloy, mechanical property obtain further raising, while these Second Phase Particles can also significantly increase Add the quantity at interface, so that the damping capacity of CuAlMn marmem obtains further raising.

(6) purpose of CN109112349A " a kind of CuAlMn marmem and preparation method thereof " is to provide for one Kind can prepare large size single crystal or the CuAlMn marmem with obvious crystallography preferred orientation and preparation method thereof. Its performance is improved by increasing the crystallite dimension of CuAlMn marmem.And technical solution provided by the present invention is to pass through It reduces crystallite dimension to eliminate casting flaw simultaneously and improve its performance, therefore technological means is completely on the contrary, the two has essence It is different.

(7) CN101713036A " the Ti-Ni-Nb-Mo marmem and processing technology of high-intensity high-damping " is involved And product is TiNi base marmem, has the difference of essence with product involved in the present invention.In addition, Technology system disclosed by CN101713036A is using reasonable preparation and heat treatment process, so that martensitic structure region increases, together When form the rich Nb particles of many disperses in the base, interfacial damping is increased to improve material to the segmentation effect of matrix using it The damping capacity of material；Solution strengthening played the role of by additions of Nb, Mo simultaneously and precipitation strength to play raising material strong The effect of degree.However technology disclosed by the invention patent is to reach raising by eliminating casting flaw on the basis of crystal grain refinement The effect of damping and intensity, therefore the two improves intensity and the means and mechanism of damping are entirely different.

In addition the mechanical property of product obtained by CN101713036A and damping capacity are significantly lower than obtained by the present invention Product, the breaking strength of the product as obtained by CN101713036A is greater than 800MPa, and Tan δ is greater than 0.015 (room temperature damping value It is not higher than 0.02), and two performances of product obtained by the present invention are respectively to be greater than 1000MPa and greater than 0.039.

The method of the present invention is also applied for the raising of other Cu base marmem mechanics and damping capacity.

Detailed description of the invention

Present invention will be further explained below with reference to the attached drawings and examples.

Fig. 1 is the metallograph of each CuAlMn marmem obtained by Examples 1 to 7, in which:

Fig. 1 (a) is the metallograph of CuAlMn marmem obtained by embodiment 1；

Fig. 1 (b) is the metallograph of CuAlMn marmem obtained by embodiment 2；

Fig. 1 (c) is the metallograph of CuAlMn marmem obtained by embodiment 3；

Fig. 1 (d) is the metallograph of CuAlMn marmem obtained by embodiment 4；

Fig. 1 (e) is the metallograph of CuAlMn marmem obtained by embodiment 5；

Fig. 1 (f) is the metallograph perpendicular to rolling direction of CuAlMn marmem obtained by embodiment 6；

Fig. 1 (g) is the metallograph of CuAlMn marmem obtained by embodiment 7；

Fig. 1 (h) is the metallograph for being parallel to rolling direction of CuAlMn marmem obtained by embodiment 6；

Fig. 2 is the stereoscan photograph of CuAlMn marmem obtained by embodiment 5.

Specific embodiment