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Influences of Thermal Martensites and Grain Orientations on Strain-induced Martensites in High Manganese TRIP/TWIP Steels

Lu Fayun ¹ ^* Yang Ping ¹ Meng Li ¹ Cui Fenge ¹ Ding Hua ²

文摘	Strain-induced martensites in high manganese TRIP/TWIP steels were investigated in the presence of thermal martensites and under the influence of austenitic grain orientation by X-ray diffraction(XRD),scanning electron microscopy(SEM) and electron backscattered diffraction(EBSD).Before deformation,the morphology of α’-M depended mainly on the number of variants and growing period.Regardless of martensite morphologies and deformation,the Kurdjumov-Sachs(K-S) orientation relationships always maintained.The 6 α-M variants formed from a plate of ε-M were of 3 pairs of twins with a common axis <110>_(α’) parallel to the normal of {111}_γ habit plane to minimize transformation strain.When α’-M could be formed only by deformation,it nucleated at the intersection of ε-M variants and grew mainly in thick ε-M plates.Thick ε plates promoted significantly the α’-M and weakened the influence of grain orientations.During tension,the transformation in <100>-oriented grains was observed to be slower than that in <111>-oriented grains.Deformation twins promoted ε-M formation slightly and had no apparent effect on α’-M.Deformation increased the number of ε-M variants,but reduced that of α’-M variants.
来源	Journal of Materials Science & Technology ,2011,27(3):257-265 【核心库】
DOI	10.1016/s1005-0302(11)60059-5
关键词	High manganese steel ; Martensite ; TRIP effect ; Orientation relationship ; Electron backscattered diffraction(EBSD)
地址	1. School of Materials Science and Engineering,University of Science and Technology Beijing, Beijing, 100083 2. College of Materials and Metallurgy,Northeastern University, Shenyang, 110004
语种	英文
文献类型	研究性论文
ISSN	1005-0302
学科	金属学与金属工艺
基金	Funded by the National Natural Science Foundation of China ; 国家教育部高等学校博士学科点专项科研基金
文献收藏号	CSCD:4410775

参考文献共 22 共2页

引证文献 4 篇

1 鲁法云 Fe-22Mn TRIP/TWIP钢拉伸过程组织、性能及晶体学行为分析金属学报,2013,49(1):1-9
CSCD被引 9 次

2 Chen Liqing Some Aspects of High Manganese Twinning-Induced Plasticity (TWIP) Steel, A Review Acta Metallurgica Sinica,2013,26(1):1-15
CSCD被引 0 次

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