Direct observations of the formation and growth of austenite from pearlite and allotriomorphic ferrite in a C-Mn steel arc weld

被引:19
作者
Palmer, TA [1 ]
Elmer, JW [1 ]
机构
[1] Lawrence Livermore Natl Lab, Mat Sci & Technol Div, Livermore, CA 94550 USA
关键词
austenite; pearlite; phase transformation; steels; welding;
D O I
10.1016/j.scriptamat.2005.04.050
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The formation and homogenization of austenite from ferrite and pearlite are directly observed in the heat affected zone of a 1045 C-Mn steel arc weld. With rapid heating, cementite does not completely dissolve before the base metal ferrite is transformed, and a second austenite constituent forms. These two austenite constituents exist up to 1400 degrees C before a single homogeneous austenite phase is produced. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:535 / 540
页数:6
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