喷丸强化对2060铝锂合金表面完整性和疲劳性能的影响

徐星辰; 刘道新; 关艳英; 成书民; 刘红兵

doi:10.13433/j.cnki.1003-8728.2016.0924

喷丸强化对2060铝锂合金表面完整性和疲劳性能的影响

doi: 10.13433/j.cnki.1003-8728.2016.0924

1.
西北工业大学腐蚀与防护研究所, 西安 710072;
2.
中航飞机股份有限公司西安飞机分公司, 西安 710089;
3.
上海飞机制造有限公司, 上海 200436

基金项目:

国家自然科学基金项目（51171154）资助

详细信息

作者简介:
徐星辰(1989-),硕士研究生,研究方向为材料的疲劳行为与表面强化技术,xaxxc@163.com

通讯作者:
刘道新(联系人),教授,博士生导师,liudaox@nwpu.edu.cn

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- 文章访问数: 113
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- 被引次数: 0
出版历程
- 收稿日期: 2014-12-08
- 刊出日期: 2016-09-05

Effect of the Shot Peening on the Surface Integrity and Fatigue Property of 2060 Aluminum Lithium Alloy

1.
Corrosion and Protection Research Laboratory, Northwestern Polytechnical University, Xi'an 710072, China;
2.
AVIC Aircraft Co., Ltd., Xi'an Aircraft Branch, Xi'an 710089, China;
3.
Shanghai Aircraft Manufacturing Co., Ltd., Shanghai 200436, China

摘要

摘要: 为提高2060新型铝锂合金的抗疲劳性能，研究了喷丸强化对2060-T8E30铝锂合金表面完整性和疲劳性能的影响规律。利用表面轮廓仪、X射线应力测试仪、扫描电子显微镜（SEM）以及透射电子显微镜（TEM）等测试和分析了铝锂合金喷丸处理前后的表面完整性变化；使用高频疲劳试验机评价了喷丸强化处理对2060-T8E30铝锂合金疲劳寿命的影响规律；探讨了喷丸强化表面完整性与疲劳性能之间的内在联系。结果表明：合理强度的喷丸强化处理能够显著提高2060-T8E30铝锂合金的疲劳寿命，但过高或过低强度的喷丸处理不能达到改善铝锂合金抗疲劳性能的最佳效果，此归因于喷丸强化处理对铝锂合金表面完整性影响作用的非单调变化规律。
- 铝锂合金 /
- 喷丸 /
- 疲劳性能 /
- 表面完整性 /
- 残余应力
Abstract: In order to improve the fatigue resistance of 2060-T8E30 aluminum lithium alloy, the effect of the shot peening on the surface integrity and fatigue property of this alloy were investigated. The variations of the surface integrity before and after shot peening were observed and analyzed by using the surface profiler, X-ray stress instrument, scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The influence of the shot peening treatments on the fatigue life was studied by using the high frequency fatigue testing machine. The internal relationship between the surface integrity and the fatigue property were discussed. The results indicated that the shot peening with rational intensity can effectively improve the fatigue life of 2060-T8E30 alloy, however the best anti-fatigue performance of the aluminum lithium alloy can not be obtained by excessively increasing or decreasing the intensity of shot peening. It should be attributed to the non-monotonic influence of the shot peening on the surface integrity of aluminum lithium alloy.
- aluminum lithium alloy /
- shot peening /
- fatigue property /
- surface integrity /
- residual stress

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参考文献(16)

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