杨延清
,
马世良
,
秦熊浦
,
康沫狂
金属学报
本文利用光学金相、X射线衍射及透射电镜研究,发现高锰无磁钢具有两种不同形态的板条组织和ε马氏体的扭折形态。固溶淬火形成的断续状短板条及形变诱发形成的细长板条都是由ε马氏体和fcc孪晶所组成,讨论了形成机理。晶体学分析表明,fcc孪晶界两侧的ε马氏体成扭析形态,是因为孪晶界两侧的基体位向不同所致,扭折部分为hcp孪晶。
关键词:
ε马氏体
,
fcc twin
,
lath structure
,
kink
YANG Yanqing MA Shiliang QIN Xiongpu KANG Mokuang Northwestern Polytechnical University
,
Xi'an
,
China YANG Yanqing
,
Graduate student
,
Dept.of Materials Science and Engineering
,
Northwestern Polytechnical University
,
Xi'an 710072
,
China
金属学报(英文版)
Two types of lath structures and kinked ε martensite were observed in the high manganese non-magnetic steel.Both the short non-continuous lath formed by quenching and the long thin straight lath induced by plastic deformation are composed of ε martensite and fcc twin. The transformation mechanism was discussed.The crystallographic analysis indicates that the e martensite at both sides of the fcc twin boundary is of kinked morphology owing to the orientation of their matrices differing from each other.The kinked region is hcp twin.
关键词:
εmartensite
,
null
,
null
,
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