Microstructures and microhardness of SNCed medium carbon low alloy steels

被引：9
|
作者：
Zhang, JB [1 ]
Liu, YL
Zhao, XQ
Wu, J
Song, HW
Xiong, TY
机构：
[1] Baoshan Iron & Steel Co Ltd, Baosteel Technol Ctr, Shanghai 201900, Peoples R China
[2] Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
来源：
PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5 | 2005年 / 475-479卷
关键词：
surface nanocrystallization; microstructure; mechanical properties; 0.4C-1.0Cr low alloy steel; 1.0C-1.5Cr low alloy steel;
D O I：
10.4028/www.scientific.net/MSF.475-479.137
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanostructured layers were fabricated on the surface of 0.4C-1.0Cr and 1.0C-1.5Cr low alloy steels by using an ultrasonic particulate peening (USPP) technique. The microstructures and mechanical properties of the nanocrystallized layers were characterized by means of transmission electron microscopy, and nano-indentation test. Results showed that the average grain size in the surface nanocrystallized layer of 0.4C-1.0Cr and 1.0C-1.5Cr low alloy steel was about 5nm and 10nm, respectively. The nano-indentation hardnesses of the surface nanocrystallized layer were enhanced significantly and reach upwards of 8.0 GPa and 12.5 GPa, respectively.
引用
收藏
页码：137 / 140
页数：4
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