阅读说明：本技术 一种通过扫描电镜、显微镜分析试棒力学性能不足的方法 (One kind passing through scanning electron microscope, the insufficient method of microscopic analysis coupon mechanical property ) 是由 高杰 徐超 袁德贝 于 2019-09-10 设计创作，主要内容包括：本发明公开了航空铸造技术领域的一种通过扫描电镜、显微镜分析试棒力学性能不足的方法,该通过扫描电镜、显微镜分析试棒力学性能不足的方法的具体实施步骤如下：步骤一：观察测试失败的试棒断口处是否有缺陷,进行FPI检测；步骤二：观察试棒晶粒；步骤三：将试棒切开,确认柱状晶和等轴晶分布；步骤四：将试棒做成试样,对试样进行腐蚀,使用电子显微镜观察其结构；步骤五：使用扫描电镜观察试样组织结构；步骤六：结合电子显微镜和扫描电镜分析结果,找出测试失败的原因；步骤七：根据上面得出的结论,找到解决方法,相对于目前没有较为科学的方式对其原因进行精确判定,从而无法找到有效的解决方法,经济实用性较强。(The invention discloses one kind of aviation casting technology field to pass through scanning electron microscope, the insufficient method of microscopic analysis coupon mechanical property, this is as follows by scanning electron microscope, the specific implementation step of the insufficient method of microscopic analysis coupon mechanical property: step 1: whether the coupon incision position for observing test crash is defective, carries out FPI detection；Step 2: observation coupon crystal grain；Step 3: coupon is cut, and confirms column crystal and equiax crystal distribution；Step 4: being made into sample for coupon, corrode to sample, uses its structure of electron microscope observation；Step 5: scanning electron microscopic observation sample tissue structure is used；Step 6: in conjunction with electron microscope and scanning electron microscope analysis as a result, the reason of finding out test crash；Step 7: according to the conclusion being derived above, finding solution, is accurately determined that its reason, so that effective solution method can not be found, economic and practical is stronger relative to currently without more scientific mode.)

1. one kind passes through scanning electron microscope, the insufficient method of microscopic analysis coupon mechanical property, it is characterised in that: this passes through scanning Electronic Speculum, the specific implementation step of the insufficient method of microscopic analysis coupon mechanical property are as follows:

Step 1: whether the coupon incision position for observing test crash is defective, carries out FPI detection；

Step 2: observation coupon crystal grain；

Step 3: coupon is cut, and confirms column crystal and equiax crystal distribution；

Step 4: being made into sample for coupon, corrode to sample, uses its structure of electron microscope observation；

Step 5: scanning electron microscopic observation sample tissue structure is used；

Step 6: in conjunction with electron microscope and scanning electron microscope analysis as a result, the reason of finding out test crash；

Step 7: according to the conclusion being derived above, solution is found.

2. one kind according to claim 1 passes through scanning electron microscope, the insufficient method of microscopic analysis coupon mechanical property, Be characterized in that: the size of crystal grain decides the tensile property of coupon at room temperature, when crystal grain is smaller, coupon in the step 2 Tensile property at room temperature is better, on the contrary then poorer.

3. one kind according to claim 1 passes through scanning electron microscope, the insufficient method of microscopic analysis coupon mechanical property, Be characterized in that: the quantity and distribution situation of equiax crystal decide the performance of mechanics in the step 3, and the more distributions of equiax crystal are more Uniformly, mechanical property is better, on the contrary then poorer.

4. one kind according to claim 1 passes through scanning electron microscope, the insufficient method of microscopic analysis coupon mechanical property, Be characterized in that: the length of dendrite decides the number and size of secondary phase in the structure observed in the step 4, observation The number of carbide decides the mechanical property of coupon in structure, and when dendrite is shorter, secondary phase is less and smaller, and carbide is got over Few, the mechanical property of coupon is better.

5. one kind according to claim 1 passes through scanning electron microscope, the insufficient method of microscopic analysis coupon mechanical property, Be characterized in that: γ ' the phase distributing homogeneity of sample institutional framework decides the mechanical property of coupon in the step 5, works as γ ' When being mutually evenly distributed, the mechanical property of coupon is more preferable.

Technical field

The present invention relates to aviation casting technology fields, specially a kind of to pass through scanning electron microscope, microscopic analysis coupon mechanics The insufficient method of performance.

Background technique

Aviation, a kind of mankind's activity that is complicated and having strategic importance.Refer to flying activity of the aircraft in earth atmosphere, And scientific research and education related to this, industrial manufacture, public transportation, professional operation, air transport, defense military, governability Etc. various fields.By the utilization for air space and aircraft, aerospace activity can be subdivided into numerous independent industries and Field, typical such as aviation, Civil Aviation Industry.People can usually be seen and use this word from respective field Language, intension and its abundant and changeable.

When aerospace components are cast, the coupon progress Mechanics Performance Testing for needing to be poured master alloy, and mechanical property Energy deficiency is relatively common problem, is accurately determined currently without more scientific mode its reason, to can not look for To effective solution method.

Summary of the invention

The purpose of the present invention is to provide one kind to pass through scanning electron microscope, the insufficient side of microscopic analysis coupon mechanical property Method, to solve the coupon progress Mechanics Performance Testing mentioned above in the background art being poured in aviation casting field to master alloy When, mechanical property deficiency cannot accurately determine its reason by way of more science, to can not find effective The problem of solution.

To achieve the above object, the invention provides the following technical scheme: a kind of pass through scanning electron microscope, microscopic analysis coupon The insufficient method of mechanical property should pass through the specific implementation of scanning electron microscope, the insufficient method of microscopic analysis coupon mechanical property Steps are as follows:

Step 1: whether the coupon incision position for observing test crash is defective, carries out FPI detection；

Step 2: observation coupon crystal grain；

Step 3: coupon is cut, and confirms column crystal and equiax crystal distribution；

Step 4: being made into sample for coupon, corrode to sample, uses its structure of electron microscope observation；

Step 5: scanning electron microscopic observation sample tissue structure is used；

Step 6: in conjunction with electron microscope and scanning electron microscope analysis as a result, the reason of finding out test crash；

Step 7: according to the conclusion being derived above, solution is found.

Preferably, the size of crystal grain decides the tensile property of coupon at room temperature in the step 2, when crystal grain is smaller When, the tensile property of coupon at room temperature is better, on the contrary then poorer.

Preferably, the quantity and distribution situation of equiax crystal decide the performance of mechanics, the more distributions of equiax crystal in the step 3 More uniform, mechanical property is better, on the contrary then poorer.

Preferably, the length of dendrite decides the number and size of secondary phase in the structure observed in the step 4, The number of carbide decides the mechanical property of coupon in the structure of observation, and when dendrite is shorter, secondary phase is less and smaller, carbon Compound is fewer, and the mechanical property of coupon is better.

Preferably, γ ' the phase distributing homogeneity of sample institutional framework decides the mechanical property of coupon in the step 5, When γ ' is mutually evenly distributed, the mechanical property of coupon is more preferable.

Compared with prior art, the beneficial effects of the present invention are: being tried by the one kind by scanning electron microscope, microscopic analysis The insufficient method of stick mechanical property, there are currently no more scientific modes accurately to be sentenced to the reason of mechanical property deficiency Fixed, in the present invention method, it is whether defective by the coupon incision position for observing test crash, FPI detection is carried out, is then passed through Coupon is cut, is corroded to sample by observation coupon crystal grain, and the observation of structure is carried out by microscope and scanning electron microscope, from And the reason of finding out test crash, to find corresponding solution according to the conclusion obtained.

Detailed description of the invention

Fig. 1 is coupon schematic diagram in the present invention；

Fig. 2 a is qualified coupon section schematic diagram in the present invention；,

Fig. 2 b is unqualified coupon section schematic diagram in the present invention；

Fig. 3 a is dendrite schematic diagram in coupon qualified in the present invention；

Fig. 3 b is dendrite schematic diagram in unqualified coupon in the present invention；

Fig. 4 a is secondary phase schematic diagram in coupon qualified in the present invention；

Fig. 4 b is secondary phase schematic diagram in unqualified coupon in the present invention；

Fig. 5 a is carbide schematic diagram in coupon qualified in the present invention；

Fig. 5 b is carbide schematic diagram in unqualified coupon in the present invention；

Fig. 6 a is sample institutional framework schematic diagram in coupon qualified in the present invention；

Fig. 6 b is sample institutional framework schematic diagram in unqualified coupon in the present invention；.

Specific embodiment

Below in conjunction with Detailed description of the invention, technical scheme in the embodiment of the invention is clearly and completely described, shows So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to In the scope of protection of the invention.

The invention provides the following technical scheme: a kind of insufficient by scanning electron microscope, microscopic analysis coupon mechanical property Method, the reason that the coupon for being poured to master alloy carries out mechanical property deficiency determine.