Alloy softening in a martensitic stainless steel

被引：2
作者：
Gupta, C. [1 ]
Chakravartty, J. K. [1 ]
机构：
[1] Bhabha Atom Res Ctr, Mech Met Sect, Mat Grp, Bombay 400085, Maharashtra, India
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2009年 / 206卷 / 04期
关键词：
BCC TRANSITION-METALS; LOW-TEMPERATURE; DEFORMATION-BEHAVIOR; PLASTIC-DEFORMATION; SCREW DISLOCATIONS; KINK PAIRS; IRON; NUCLEATION; MECHANISMS; CRYSTALS;
D O I：
10.1002/pssa.200824289
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A study of the tensile flow behavior in the microstrain region of a martensitic stainless steel within the temperature range 77-273 K has been carried out. The ductility and work hardening in the low temperature region were found to be significantly larger than those of the ambient at temperatures where alloy softening was taking place. Thermal-activation analysis of data has attributed the low-temperature deformation behavior to the operation of the Peierls mechanism. While the Dorn-Rajnak model was found to fit the data, the observed alloy softening was attributed to the operation of an intrinsic mechanism that promoted the double-kink formation on dislocations within a limited temperature range below ambient. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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收藏
页码：685 / 690
页数：6
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