A micro-mechanism to explain the post-DRX grain growth at temperatures > 0.8Tm

被引：15
作者：
Aashranth, B. [1 ]
Samantaray, Dipti [1 ]
Davinci, M. Arvinth [1 ]
Murugesan, S. [1 ]
Borah, Utpal [1 ]
Albert, Shaju K. [1 ]
Bhaduri, A. K. [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, Kalpakkam 603102, Tamil Nadu, India
来源：
MATERIALS CHARACTERIZATION | 2018年 / 136卷
关键词：
AUSTENITIC STAINLESS-STEEL; DYNAMIC RECRYSTALLIZATION; METADYNAMIC RECRYSTALLIZATION; HOT; STRAIN; DEFORMATION; COLD; SLIP; REFINEMENT; MARTENSITE;
D O I：
10.1016/j.matchar.2017.12.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A micro-mechanism responsible for the occurrence of post-dynamic recrystallization (DRX) grain growth during deformation at T > 0.8T(m) is described. Thermo-mechanical testing, microstructural characterization and diffraction studies reveal the link between slip and grain growth. If deformation is imparted in a single stage, grains grow by a cooperative growth process involving grain rotation and alignment of slip planes. This mechanism changes when deformation is interrupted and controlled intermediate soaking is performed before re-loading. A premeditated control of mechanism is shown to yield favourable microstructural and mechanical properties. A strategy to apply this control to industrial hot deformation is outlined.
引用
收藏
页码：100 / 110
页数：11
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