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材料工程  2014, Vol. 0 Issue (12): 86-91    DOI: 10.11868/j.issn.1001-4381.2014.12.015
  测试与表征 本期目录 | 过刊浏览 | 高级检索 |
喷丸强化对2XXX铝合金疲劳寿命的影响
周松1,2, 谢里阳1, 回丽2, 张啸尘1, 许良2
1. 东北大学 机械工程与自动化学院, 沈阳 110004;
2. 沈阳航空航天大学 航空制造工艺数字化国防重点学科实验室, 沈阳 110136
Influence of Shot Peening on Fatigue Life of 2XXX Aluminum Alloy
ZHOU Song1,2, XIE Li-yang1, HUI Li2, ZHANG Xiao-chen1, XU Liang2
1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110004, China;
2. Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, China
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摘要 研究喷丸对2XXX铝合金拉-拉疲劳性能的影响.对未喷丸试样和喷丸强化试样的微观组织、显微硬度、残余应力和拉-拉疲劳性能进行对比分析.结果表明:喷丸处理后,试样的组织和微结构未发现明显变化,但其粗糙度、残余压应力和显微硬度有所提高,分别是未喷丸试样的6.25倍,3.85倍和1.12倍;拉-拉疲劳性能显著提高,其中值疲劳寿命是未喷丸的1.67倍.在99.9%存活率下,喷丸试样的安全寿命是未喷丸试样的1.45倍.且表面喷丸强化后疲劳裂纹源由多个变为一个.
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周松
谢里阳
回丽
张啸尘
许良
关键词 铝合金疲劳喷丸微观组织残余应力    
Abstract:The influence of shot peening on the tension-tension fatigue properties of 2XXX aluminum alloy was studied. The microstructure, microhardness, residual stress and tension-tension fatigue performance of the specimens were analyzed,before and after shot peening.The results show that the structure and microstructure of the specimens have no obvious change,but the roughness,residual compressive stress and microhardness increase obviously, which are 6.25, 3.85, 1.12 times respectively of samples without shot peening. The tension-tension fatigue properties improve greatly,average life of the shot peening specimens is 1.67 times of that specimens without shot peening. Under 99.9% survival rate, the safety life of specimens after shot peening is 1.45 times of that specimens without shot peening. After shot peening, the fatigue crack source on the surface changes to one source from multi sources.
Key wordsaluminum alloy    fatigue    shot peening    microstructure    residual stress
收稿日期: 2013-12-11      出版日期: 2014-12-20
1:  TG178  
  V261  
基金资助:国家自然科学基金资助项目(51175072);高等学校博士学科点专项科研基金资助 (20110042130003)
通讯作者: 回丽(1965-),女,教授,博士后,从事结构强度及完整性评定方面的研究工作,联系地址:辽宁省沈阳市沈北新区道义南大街37号沈阳航空航天大学航空制造工艺数字化国防重点学科实验室(110136)     E-mail: syhuili@126.com
引用本文:   
周松, 谢里阳, 回丽, 张啸尘, 许良. 喷丸强化对2XXX铝合金疲劳寿命的影响[J]. 材料工程, 2014, 0(12): 86-91.
ZHOU Song, XIE Li-yang, HUI Li, ZHANG Xiao-chen, XU Liang. Influence of Shot Peening on Fatigue Life of 2XXX Aluminum Alloy. Journal of Materials Engineering, 2014, 0(12): 86-91.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2014.12.015      或      http://jme.biam.ac.cn/CN/Y2014/V0/I12/86
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