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材料工程  2019, Vol. 47 Issue (8): 169-175    DOI: 10.11868/j.issn.1001-4381.2019.000191
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
喷丸对DD6单晶高温合金拉伸性能的影响
韩梅1, 喻健1, 李嘉荣1, 谢洪吉1, 董建民1, 杨岩2
1. 中国航发北京航空材料研究院 先进高温结构材料重点实验室, 北京 100095;
2. 陆军航空兵军事代表局驻北京地区军事代表室, 北京 100095
Influence of shot peening on tensile properties of DD6 single crystal superalloy
HAN Mei1, YU Jian1, LI Jia-rong1, XIE Hong-ji1, DONG Jian-min1, YANG Yan2
1. Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
2. Arm Air Force Stationed in Beijing Military Representative, Beijing 100095, China
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摘要 采用扫描电子显微镜(SEM)、X射线(X-ray)和透射电子显微镜(TEM)等手段研究铸钢丸喷丸对第二代单晶高温合金DD6在500,600,650℃拉伸性能的影响。结果表明:500,600,650℃时,喷丸对DD6合金抗拉强度影响不大,略微提高屈服强度,显著降低伸长率和断面收缩率。喷丸DD6合金在流变应力上升到最高点后断裂,试样拉伸断裂后的横截面为圆形;未喷丸DD6合金拉伸曲线呈现双重阶段特征,试样拉伸断裂后的横截面为椭圆形。
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韩梅
喻健
李嘉荣
谢洪吉
董建民
杨岩
关键词 DD6单晶高温合金喷丸拉伸性能显微组织    
Abstract:The influence of cast steel shot-peening on the tensile properties of the second generation single crystal superalloy DD6 under 500, 600,650℃ was investigated by SEM, X-ray and TEM. The results show that the shot-peening has no influence on the tensile strength of DD6 alloy at 500, 600,650℃, and the yield strength is slightly increased, while the elongation and the shrinkage of cross section are remarkably decreased. The shot-peening DD6 alloy is ruptured after the flow stress rising to the highest point, and the cross section of fracture samples presents circle shape. The stress-strain curves of non-shot-peening DD6 alloy exhibit double stages feature, and the cross section of fracture samples presents ellipse shape.
Key wordsDD6    single crystal superalloy    shot-peening    tensile property    microstructure
收稿日期: 2019-03-05      出版日期: 2019-08-22
中图分类号:  TG132.3  
通讯作者: 韩梅(1973-),女,高工,研究方向为单晶高温合金,联系地址:北京市81信箱1分箱(100095),E-mail:Han_mei1973@icloud.com     E-mail: Han_mei1973@icloud.com
引用本文:   
韩梅, 喻健, 李嘉荣, 谢洪吉, 董建民, 杨岩. 喷丸对DD6单晶高温合金拉伸性能的影响[J]. 材料工程, 2019, 47(8): 169-175.
HAN Mei, YU Jian, LI Jia-rong, XIE Hong-ji, DONG Jian-min, YANG Yan. Influence of shot peening on tensile properties of DD6 single crystal superalloy. Journal of Materials Engineering, 2019, 47(8): 169-175.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000191      或      http://jme.biam.ac.cn/CN/Y2019/V47/I8/169
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