Recrystalised grain morphology in 9Cr 1Mo ferritic steel

被引：14
|
作者：
Mungole, M. N. [1 ]
Sahoo, Gadadhar [2 ]
Bhargava, S. [3 ]
Balasubramaniam, R. [1 ]
机构：
[1] Indian Inst Technol, Dept Mat & Met Engn, Kanpur 208016, Uttar Pradesh, India
[2] Steel Author India Ltd, R&D Ctr Iron & Steel, Ranchi 834002, Bihar, India
[3] PDPM Indian Inst Informat Technol, Jabalpur 482011, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 476卷 / 1-2期
关键词：
ferritic steel; cold rolling; recrystallization-annealing; micro-hardness; tensile strength; ductility;
D O I：
10.1016/j.msea.2007.04.105
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Grain morphology in cold rolled, recrystallize-annealed 9Cr 1Mo commercial grade ferritic steel has been investigated. The recrytallization-annealing up to 100 h at 1100 K exhibited carbide particles embedded in alpha-ferrite grain matrix. The resulted grain sizes were much smaller than those of virgin sample. The heat treatment more than 100 h resulted in dual phase ferrite-martensite morphology. The recrystallization-annealing at 1300 and 1350 K changed the morphology in complete tempered martensite microstructure significantly. The hardness of martensite structure was more than that of the ferrite. The 80% cold rolled samples resulted in increase in tensile strength with significant loss in ductility after recrystallization-annealing and air cooling. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：140 / 145
页数：6
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