| Research on Stress-Induced Nucleation of ε-Martensite in Fe-17Mn-10Cr-5Si-4Ni Polycrystalline Alloy |
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| 作者姓名： | LIU Qing-suo GU Nan-ju LIN Cheng-xin |
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| 作者单位： | 1. Tianjin Institute of Technology，Tianjin 300191，China; 2. Hebei University of Technology，Tianjin 300131，China |
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| 基金项目： | ItemSponsoredbyNationalNaturalScienceFoundationofChina (5980 1 0 0 5) |
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| 摘 要： | ForFeMnSifamilyalloy ,thestress inducedγ→εmartensitictransformationisthebasisofSMEproduction1 3 ] ,thusthestudyonmechanismofγ→εmartensitictransformation ,especiallyonnucle ationofε martensite ,hasgreatsignificanceforun derstandingthenatureofshapememorycharacterandapplicationofthistypealloy .Anequationde ducedbyHsuTYforstackingfaultprobabilityPsfandMsinlowstackingfaultenergyalloyfromther modynamicsis :Ms=C -D /Psf,whereCandDareplusconstants4 ] .InagakiHetalhavealsore portedthatu…
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| 关 键 词： | stacking fault overlap nucleation location stress-induced ε-martensite |
Research on Stress-Induced Nucleation of ε-Martensite in Fe-17Mn-10Cr-5Si-4Ni Polycrystalline Alloy |
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| LIU Qing-suo ,GU Nan-ju ,LIN Cheng-xin .Research on Stress-Induced Nucleation of ε-Martensite in Fe-17Mn-10Cr-5Si-4Ni Polycrystalline Alloy[J].Journal of Iron and Steel Research,2003,10(2). |
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| Authors: | LIU Qing-suo GU Nan-ju LIN Cheng-xin |
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| Abstract: | The relation between stacking fault overlap and martensitic nucleation in Fe-17Mn-10Cr-5Si-4Ni alloy was studied. The arrayed structure of dislocations and characteristics of ε-martensite formation under stress were in-situ observed by TEM. The results reveal that ε-martensite nucleates at the top of stacking faults overlapped band, where the ordered arrayed structure of Shockley partial dislocations exists. External stress promotes ε-martensitic nucleation ability because of accelerated ordering of Shockley partial dislocations in stacking faults overlapped band. |
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| Keywords: | stacking fault overlap nucleation location |
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