INVESTIGATIONS OF MICROSTRUCTURE OF RESISTANCE SPOT-WELDED JOINTS MADE OF HSLA340 AND DP600 STEELS

被引：7
|
作者：
Ignasiak, A. [1 ]
Korzeniowski, M. [2 ]
Ambroziak, A. [2 ]
机构：
[1] Wroclaw Univ Technol, Mech Fac, PL-50370 Wroclaw, Poland
[2] Wroclaw Univ Technol, Inst Machine Engn & Automat, Welding Div, PL-50371 Wroclaw, Poland
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2012年 / 57卷 / 04期
关键词：
resistance spot welding; high-strength steel; metallographic examination;
D O I：
10.2478/v10172-012-0120-6
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The paper presents results of metallographic investigations of spot welds made of high-strength steel HSLA340 and dual-phase DP600 steel. Low-carbon martensite microstructure was found in the weld nugget of HSLA steel. The DP600 steel shows martensite and bainite microstructure. For both steels, no carbides of microadditives were found because they dissolved in liquid nugget and could not precipitate again because of rapid heat abstraction. Moreover, no transcrystallisation was found in both steels, which proves good mixing of the materials within the weld.
引用
收藏
页码：1081 / 1086
页数：6
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