High temperature workability behaviour of a modified P92 steel

被引：12
|
作者：
Carsi, Manuel
Penalba, Felix [2 ]
Rieiro, Ignacio [3 ]
Ruano, Oscar A. [1 ]
机构：
[1] CSIC, CENIM, Ctr Nacl Invest Met, Dept Met Phys, Madrid 28040, Spain
[2] TECNALIA, San Sebastian, Spain
[3] Univ Castilla La Mancha, Dipartimento Matemat, Toledo, Spain
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2011年 / 102卷 / 11期
关键词：
P92; steel; Forming; Garofalo equation; Efficiency maps; Stability maps; GAROFALO EQUATION;
D O I：
10.3139/146.110603
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The high temperature forming behaviour of a modified P92, type 9% Cr, steel is studied by means of torsion tests. The data obtained from these tests allowed correlation of the number of turns to failure, a measure of ductility, as a function of strain rate and temperature. In addition, the data were correlated by the Garofalo equation with a stress exponent of 4.78 and an activation energy of 390 kJ mol(-1). This equation was used to predict the formability behaviour for the rolling process and also to determine the maximum forming efficiency and stability of the steel. A temperature of 1140 degrees C is found to give the optimum forming temperature.
引用
收藏
页码：1378 / 1383
页数：6
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