PLASTIC PROPERTIES OF FINE-GRAINED WMD AFTER MICRO-JET COOLING

被引：5
|
作者：
Hadrys, D. [1 ]
Wegrzyn, T. [2 ]
Piwnik, J. [3 ]
机构：
[1] Higher Sch Labour Safety Management Katowice, PL-40007 Katowice, Poland
[2] Silesian Tech Univ, PL-40019 Katowice, Poland
[3] Bialystok Tech Univ, PL-15351 Bialystok, Poland
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2014年 / 59卷 / 03期
关键词：
micro-jet cooling in welding; coefficient of restitution; plastic strain; dynamic conditions; metallographic structure; acicular ferrite;
D O I：
10.2478/amm-2014-0155
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Micro-jet welding is an innovative method of weld forced cooling immediately after welding. It allows to obtain weld with superior properties in comparison to conventional welding. The reason for this is to obtain a more favorable structure of the weld metal deposit (WMD) with much higher amount of acicular ferrite (AF). Different structures and mechanical properties of weld metal deposit were obtained by using various gases for cooling. The paper shows the relationship between the type of gas for micro-jet cooling and plastic properties of the weld joint. Coefficient of restitution and plastic strain were selected to describe changes of weld plastic properties for different micro-jet cooling gases. The tests were performed in dynamic conditions (impact).
引用
收藏
页码：919 / 923
页数：5
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