| Fe-Ni-Mn合金中等温马氏体的生长过程 |
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| 引用本文： | 杨大智,朱敏.Fe-Ni-Mn合金中等温马氏体的生长过程[J].金属学报,1988,24(4):236-241. |
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| 作者姓名： | 杨大智 朱敏 |
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| 作者单位： | 大连工学院材料系,大连工学院 |
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| 摘 要： | 本文采用透射电子显微镜研究了Fe-21Ni-4Mn合金中等温马氏体的生长过程,着重探讨了生长过程中亚结构的发展和变化.结果表明,在马氏体生长的初期阶段,小的薄片状马氏体的亚结构完全是以(112)_b为孪晶面的孪晶,并且贯穿整个片内,相界面平直向前生长.稍后阶段,片的生长主要集中在一侧,此例相界面弯曲向前生长,出现非孪晶区域,内含大量位错,同时,片的孪晶弯曲.生长到后期,弯曲的相界面变为平直,邻近相同位向的小片相互联接在一起,形成一宏观惯习面为(252)_f的大马氏体片,而构成大片的小马氏体片的惯习面为(121)_f.
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| 关 键 词： | Fe-Ni-Mn合金 片状马氏体 等温转变 |
| 收稿时间： | 1988-04-18 |
| 修稿时间： | 1988-04-18 |
GROWTH OF ISOTHERMAL MARTENSITE IN AN Fe-Ni-Mn ALLOY |
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| YANG Dazhi,ZHU Min Dalian Institute of Technology,LiaoningDept.of Mater.Sci. and Eng.,Dalian Institute of Technology,Liaoning.GROWTH OF ISOTHERMAL MARTENSITE IN AN Fe-Ni-Mn ALLOY[J].Acta Metallurgica Sinica,1988,24(4):236-241. |
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| Authors: | YANG Dazhi ZHU Min Dalian Institute of Technology LiaoningDeptof MaterSci and Eng Dalian Institute of Technology Liaoning |
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| Abstract: | The substructural development of martensite plates at different stage
of the transformation for an Fe-21Ni-4Mn alloy has been investigated by using
transmission electron microscope. Twinning was found in small thin platelets at
the initial stage. Fine twins extend to the whole platelet. The dislocations and twins
were found in the thick platelets at a later stage. Bending of the twins was also
observed frequently at this stage. Finally, several platelets coalesce with each other
to forma macroscopic (252)_f martensite "plate". The original habit plane of the
individual platelet was measured to be close to (121)_f. |
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| Keywords: | Fe-Ni-Mn alloy plate martensite isothermal transformation |
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