Hot working characteristics of cobalt in the temperature range 600-950 °C

被引：36

作者：

Paul, B. ^{[1
]}

Kapoor, R. ^{[1
]}

Chakravartty, J. K. ^{[1
]}

Bidaye, A. C. ^{[1
]}

Sharma, I. G. ^{[1
]}

Suri, A. K. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Mat Grp, Bombay 400085, Maharashtra, India

来源：

SCRIPTA MATERIALIA | 2009年 / 60卷 / 02期

关键词：

Dynamic recrystallization; Compression; Hot working; Cobalt; Strain rate sensitivity; DYNAMIC RECRYSTALLIZATION; DEFORMATION-BEHAVIOR; TRANSFORMATION; ALLOYS; MARTENSITE; PHASE; BETA; FCC;

D O I：

10.1016/j.scriptamat.2008.09.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hot deformation behavior of FCC cobalt and the associated microstructural changes have been studied using compression tests over a range of strain rates and temperatures in order to identify the deformation mechanism. Cobalt material when deformed at elevated temperatures exhibited considerable flow softening either with single or multiple peaks followed by steady state behavior. On the basis of metallographic observations, nature of stress-strain behavior and kinetic analysis, it was established that dynamic recrystallization occurs during hot deformation. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：104 / 107

页数：4

共 24 条

[1]

Ashby M.F., 1982, DEFORMATION MECH MAP

[2]

BECKERS H, 1964, COBALT, V25, P171

[3]

BETTERIDGE W, 1979, PROG MATER SCI, V24, P51

[4]

Brandes EA., 2013, SMITHELLS METALS REF

[5] Characterization of hot-deformation behaviour of Zircaloy-2: a comparison between kinetic analysis and processing maps [J].

Chakravartty, J ;

Kapoor, R ;

Banerjee, S .

ZEITSCHRIFT FUR METALLKUNDE, 2005, 96 (06) :645-652

[6] TEMPERATURE AND CONCENTRATION DEPENDENCE OF STACKING FAULT ENERGY IN CO-NI SYSTEM [J].

ERICSSON, T .

ACTA METALLURGICA, 1966, 14 (07) :853-&

[7]

FELTHAM P, 1963, PHILOS MAG, V86, P203

[8] Dynamic recrystallization of copper polycrystals with different purities [J].

Gao, W ;

Belyakov, A ;

Miura, H ;

Sakai, T .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 265 (1-2) :233-239

[9] TRANSMISSION ELECTRON-MICROSCOPY OBSERVATIONS OF THE FCC-TO-HCP MARTENSITE-TRANSFORMATION IN CO-NI ALLOYS [J].

HAYZELDEN, C ;

CHATTOPADHYAY, K ;

BARRY, JC ;

CANTOR, B .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1991, 63 (03) :461-470

[10]

JACQUERIE JM, 1968, COBALT, V38, P38

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