| 不同工艺对FGH95合金力学性能的影响 |
| |
| 引用本文： | 郭婧, 刘志远. 不同工艺对FGH95合金力学性能的影响[J]. 失效分析与预防, 2018, 13(3): 144-147,181. DOI: 10.3969/j.issn.1673-6214.2018.03.002 |
| |
| 作者姓名： | 郭婧 刘志远 |
| |
| 作者单位： | 1.中国航发湖南动力机械研究所, 湖南 株洲 412002 |
| |
| 摘 要： | 通过在零件上取小试样进行拉伸及拉-拉疲劳性能测试，分析研究热等静压+挤压+等温锻（EX）及直接热等静压（HIP）两种工艺在模拟服役条件下对FGH95合金力学性能的影响。结果表明，EX试样抗拉强度的稳定性高于HIP试样。从线性回归应力寿命（S-N）曲线中可以得到，在给定的循环载荷条件下，EX试样失效前承受的循环次数更多，分散性更小。断口断裂特征表明，EX工艺条件下合金以塑性断裂机制为主，而HIP工艺条件下以脆性断裂机制为主。
|
| 关 键 词： | FGH95合金 小试样 力学性能 分散性 断裂特征 |
| 收稿时间： | 2018-04-11 |
| 修稿时间： | 2018-05-21 |
Effects of Different Process on Mechanical Properties of FGH95 Alloy |
| |
| GUO Jing, LIU Zhi-yuan. Effects of Different Process on Mechanical Properties of FGH95 Alloy[J]. Failure Analysis and Prevention, 2018, 13(3): 144-147,181. DOI: 10.3969/j.issn.1673-6214.2018.03.002 |
| |
| Authors: | GUO Jing LIU Zhi-yuan |
| |
| Affiliation: | 1.AECC Hunan Aviation Powerplant Research Institute, Hunan Zhuzhou 412002, China |
| |
| Abstract: | Tensile and tension-tension fatigue tests were carried out on the small specimens from parts to investigate the effect of "hot isostatic pressing+extrusion+isothermal forging" and "hot isostatic pressing" processes on the mechanical prosperities of FGH95 alloy under service condition. The results show that the stability of tensile strength of EX specimens is higher than that of HIP specimens. The linear regression stress-life(S-N) curves indicate that under the specified cyclic loading conditions, EX specimens could bear more cycles with less dispersion before failure. The fracture characteristics show that the fracture of EX specimens is mainly plastic fracture, but the fracture of HIP specimens is mainly brittle fracture. |
| |
| Keywords: | FGH95 alloy small specimens mechanical property dispersion fracture characteristics |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《失效分析与预防》浏览原始摘要信息 |
|
点击此处可从《失效分析与预防》下载免费的PDF全文 |
