Hall-Petch relationship of a TWIP steel

被引：62

作者：

de las Cuevas, F. ^{[1
]}

Reis, M. ^{[2
]}

Ferraiuolo, A. ^{[3
]}

Pratolongo, G. ^{[4
]}

Karjalainen, L. P. ^{[5
]}

Alkorta, J. ^{[1
]}

Sevillano, J. Gil ^{[1
]}

机构：

[1] CEIT, M Lardizabal 15, San Sebastian 20018, Spain

[2] ISQ, Lisbon, Portugal

[3] CSM, Rome, Italy

[4] Dufer Co, Louvain, Belgium

[5] Oulu Univ, Oulu, Finland

来源：

MECHANICAL PROPERTIES OF SOLIDS XI | 2010年 / 423卷

关键词：

TWIP steel; Hall-Petch effect; mechanical twinning; grain size; TENSILE PROPERTIES; AUSTENITIC STEEL; DEFORMATION; BEHAVIOR; GRAIN;

D O I：

10.4028/www.scientific.net/KEM.423.147

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The grain size dependence of the tensile properties of a TWIP steel has been determined for a wide range of grain sizes obtained by grain growth after complete recrystallization of cold rolled material. The near-linear stress-strain behaviour typical of either TWIP steels or other materials that deform by twinning has been observed, the work hardening rate being larger for the smaller grain sizes. The Hall-Petch slope increases as a function of strain, from 350 MPa mu m(1/2) for the yield stress to 630 MPa mu m(1/2) for the maximum uniform strain in the tensile tests, epsilon congruent to 0.40. Profuse twinning is observed in deformed specimens by means of FIB-ISE.

引用

页码：147 / +

页数：2

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