| 15MnMoVNRe钢焊接近缝区拘束应变—相变—韧性之间的关系 |
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| 引用本文： | 杨永兴,欧阳国强.15MnMoVNRe钢焊接近缝区拘束应变—相变—韧性之间的关系[J].西安交通大学学报,1992,26(3):33-40. |
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| 作者姓名： | 杨永兴 欧阳国强 |
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| 作者单位： | 西安交通大学机械工程系
(杨永兴)，西安交通大学机械工程系(欧阳国强) |
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| 摘 要： | 以不同焊接热循环分别联合不同拘束应变循环两模拟试验结果,证明在同一热循环作用下,随着拘束应变量的增大使15MnMoVNRe钢CCT图中的B_?和M_?点逐次向左上方移动,从而对其显微组织和其精细结构发生了显著的作用,导致其韧性各异。当有该应变存在时所获得的韧性均高于无拘束应变的,并且该应变ε_max为1%时韧性最高。
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| 关 键 词： | 焊接近缝区 韧性 应变 相变 |
RESTRAINT STRAIN-TRANSFORMATION-TOUGHNESS RELATIONS IN CGHAZ FOR 15MnMoVNRe STEEL |
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| Yang Yongxing,Ouyang Guoqiang.RESTRAINT STRAIN-TRANSFORMATION-TOUGHNESS RELATIONS IN CGHAZ FOR 15MnMoVNRe STEEL[J].Journal of Xi'an Jiaotong University,1992,26(3):33-40. |
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| Authors: | Yang Yongxing Ouyang Guoqiang |
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| Institution: | Yang Yongxing;Ouyang Guoqiang Department of Mechanical Engineering |
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| Abstract: | The influence of restraint strain strain in welding on transformation behavior in CGHAZ for
15MnMoVNRe steel have been studied by using simulator Gleeble simulator Gleeble 1 500.It was found that the trans-
formation behavior in CGHAZ was not only a function of thermal cycle but aaso of restraimt strain cy-
cle.Both B. and M. temperatures were elevated resulting from the strain during cooling stage of thermal
Cycle.
The.contrlbution of the Strain the improvement of charpy energy was: the impact energy of
CGHAZ in the case of thermal cycle(t_(?/=9s)combined with strain cycle((?)=1%)was increased
over 30% as compared with that in the case of the. same thermal cycle without any strain cycle. |
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| Keywords: | Phase transformation strain toughness |
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