| U-Nb合金的可逆塑性变形及其消除方法 |
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| 引用本文： | 何立峰,黄海,杨建雄,任大鹏,张延志.U-Nb合金的可逆塑性变形及其消除方法[J].中国有色金属学报,2011(8). |
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| 作者姓名： | 何立峰 黄海 杨建雄 任大鹏 张延志 |
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| 作者单位： | 中国工程物理研究院; |
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| 摘 要： | 研究淬火态和时效态U-Nb合金在机械加工和静拉伸时的可逆塑性变形,采用透射电子显微镜进行原位拉伸观察,结合变形前后及二次时效后合金的X射线衍射分析探讨U-Nb合金的塑性变形机制,利用时效方法探索消除加工变形的可行性。结果表明:高密度孪晶的相互吞并、长大及发生择优取向是该合金在变形初期的主要变形机制;淬火态和经150℃时效U-Nb合金的变形量差别不大,而经200℃时效U-Nb合金的加工变形量与前两者相比相对较小;利用200℃二次时效的方法消除塑性变形时,U-Nb合金的变形回复量可达50%以上。
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| 关 键 词： | U-Nb合金 形状记忆效应 变形 消除 孪晶 马氏体 |
Reversible plastic deformation and elimination method of U-Nb alloy |
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| HE Li-feng,HUANG Hai,YANG Jian-xiong,REN Da-peng,ZHANG Yan-zhi.Reversible plastic deformation and elimination method of U-Nb alloy[J].The Chinese Journal of Nonferrous Metals,2011(8). |
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| Authors: | HE Li-feng HUANG Hai YANG Jian-xiong REN Da-peng ZHANG Yan-zhi |
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| Affiliation: | HE Li-feng,HUANG Hai,YANG Jian-xiong,REN Da-peng,ZHANG Yan-zhi (China Academy of Engineering Physics,Mianyang 621900,China) |
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| Abstract: | The reversible plastic deformation during machining and static tensile test was studied for as-quenched and aged U-Nb alloy.The deformation mechanism of U-Nb alloy was probed by X-ray diffraction analysis and in-situ tensile test on transmission electron microscope.The feasibility of eliminating the machining deformation was probed by aging method.The results show that the growing up,incorporation and reorientation of martensite variants with high density twins is the primary deformation mechanism for U-Nb ... |
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| Keywords: | U-Nb alloy shape memory effect deformation elimination twin martensite |
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