| 喷丸对DD6单晶高温合金拉伸性能的影响 |
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| 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 |
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| 作者姓名： | 韩梅 喻健 李嘉荣 谢洪吉 董建民 杨岩 |
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| 作者单位： | 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;陆军航空兵军事代表局驻北京地区军事代表室,北京,100095 |
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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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| 关 键 词： | DD6 单晶高温合金 喷丸 拉伸性能 显微组织 |
Influence of shot peening on tensile properties of DD6 single crystal superalloy |
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| 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[J]. Journal of Materials Engineering, 2019, 47(8): 169-175 |
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| Authors: | HAN Mei YU Jian LI Jia-rong XIE Hong-ji DONG Jian-min YANG Yan |
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| Affiliation: | (Science and Technology on Advanced High Temperature Structural Materials Laboratory,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;Arm Air Force Stationed in Beijing Military Representative,Beijing 100095,China) |
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| 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. |
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| Keywords: | DD6 single crystal superalloy shot-peening tensile property microstructure |
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