Effect of preheat on residual stress distributions in arc-welded mild steel plates

被引：12

作者：

Adedayo, SM ^{[1
]}

Adeyemi, MB ^{[1
]}

机构：

[1] Univ Ilorin, Dept Mech Engn, Ilorin, Nigeria

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2000年 / 9卷 / 01期

关键词：

preheat; residual stress; steel; strain gauges; welding;

D O I：

10.1361/105994900770346213

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Residual stress distribution in the longitudinal and transverse directions on a 6-mm-thick arc-welded mild steel plate was experimentally examined with and without initial preheat. Stress measurements were completed by monitoring strain changes on mounted strain gauges resulting from successive milling of the welded plate specimens. Machining stresses were also compensated for by carrying out measurements of strain changes due to milling operation of a stress-free unwelded annealed mild steel plate. High tensile residual stresses exist close to the weld line in both longitudinal and transverse stresses. Maximum longitudinal residual stress values existing close to the weld line are reduced (between 50 and 75%) due to the effect of initial metal preheat of 200 degrees C of the welded steel plate.

引用

页码：7 / 11

页数：5