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Abstract:
对316L不锈钢进行表面机械研磨处理(SMAT),获得表面为纳米晶、晶粒尺寸沿厚度方向逐渐增大的梯度组织.对SMAT前、后样品进行不同温度和时间的真空退火.结果表明:当退火温度低于0.5Tm(Tm为熔点)时,梯度组织中晶粒尺寸未发生明显变化,只是在表面纳米晶层及其相邻的亚微晶层上因残余应力释放而发生了马氏体相变,对应的硬度沿深度分布也未见明显的改变;当退火温度高于0.5Tm时,梯度组织发生回复和再结晶,加之残余应力大幅度下降,使硬度明显下降.与退火温度相比,退火时间对梯度组织和硬度的影响不大.
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金属学报
ISSN: 0412-1961
CN: 21-1139/TG
Year: 2005
Issue: 6
Volume: 41
Page: 577-582
0 . 3 6 6
JCR@2005
2 . 4 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
JCR Journal Grade:3
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WoS CC Cited Count: 0
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 9
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