Achieving ultrafine dual-phase structure with superior mechanical property in friction stir processed plain low carbon steel

被引：57
|
作者：
Xue, P. [1 ]
Xiao, B. L. [1 ]
Wang, W. G. [1 ]
Zhang, Q. [1 ]
Wang, D. [1 ]
Wang, Q. Z. [1 ]
Ma, Z. Y. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 575卷
基金：
中国国家自然科学基金;
关键词：
Friction stir processing; Steel; Dual phases; Ultrafine grained microstructure; GRAIN-SIZE; TENSILE PROPERTIES; HIGH-STRENGTH; STRAIN-RATE; MICROSTRUCTURE; DEFORMATION; FERRITE; TRANSFORMATION; DUCTILITY; ALUMINUM;
D O I：
10.1016/j.msea.2013.03.033
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ultrafine dual-phase structure was successfully prepared in a plain low carbon steel via friction stir processing (FSP) at a tool rotation rate of 400 rpm and a travel speed of 50 mm/min under rapid water cooling. Ultrafine polygonal ferrite grains (similar to 1 mu m) were distributed around the martensite phase consisting of nanostructured laths with a width of similar to 200 nm. FSP steel exhibited a good combination of ultrahigh yield strength of similar to 1100 MPa and large uniform elongation of similar to 7%. This work provides an effective strategy to prepare high strength low carbon steels. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：30 / 34
页数：5
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