Morphologies and characteristics of deformation induced martensite during tensile deformation of 304 LN stainless steel

被引：177

作者：

Das, Arpan ^{[1
]}

Sivaprasad, S. ^{[1
]}

Ghosh, M. ^{[1
]}

Chakraborti, P. C. ^{[2
]}

Tarafder, S. ^{[1
]}

机构：

[1] Natl Met Lab, Div Mat Sci & Technol, Jamshedpur 831007, Bihar, India

[2] Jadavpur Univ, Dept Met & Mat Engn, Kolkata 700032, India

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 486卷 / 1-2期

关键词：

deformation induced martensite; martensitic transformation; 304 LN stainless steel; strain rate effect;

D O I：

10.1016/j.msea.2007.09.005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The austenite gamma (fcc) matrix of 304 LN stainless steel transforms readily to martensites epsilon (hcp) and alpha' (bcc) on deformation. The formation and nucleation mechanism of deformation induced martensite (DIM) during tensile deformation of 304 LN stainless steel has been studied at various strain rates in room temperature. It is investigated that the enhancement of strain rates during tensile deformation promotes the early formation of DIM, while suppressing its saturation value at fracture. Extensive transmission electron microscopy (TEM) studies showed more than one nucleation site for martensite transformation and the transformation mechanisms were observed to be gamma (fcc) -> epsilon (hcp), gamma (fcc) -> alpha' (bcc) and gamma (fcc) -> epsilon (hcp) -> alpha' (bcc). (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：283 / 286

页数：4

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