X-Ray Diffraction Technique Applied to Study of Residual Stresses after Welding of Duplex Stainless Steel Plates

被引：10

作者：

Monin, Vladimir Ivanovitch ^{[1
]}

Lopes, Ricardo Tadeu ^{[2
]}

Turibus, Sergio Noleto ^{[2
]}

Payao Filho, Joao C. ^{[2
]}

de Assis, Joaquim Teixeira ^{[1
]}

机构：

[1] UERJ, IPRJ, BR-28610974 Nova Friburgo, RJ, Brazil

[2] Univ Fed Rio de Janeiro, BR-21941972 Rio de Janeiro, RJ, Brazil

来源：

MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2014年 / 17卷

关键词：

duplex steel; welding; X-ray diffraction; residual stresses;

D O I：

10.1590/S1516-14392014005000047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Duplex stainless steel is an example of composite material with approximately equal amounts of austenite and ferrite phases. Difference of physical and mechanical properties of component is additional factor that contributes appearance of residual stresses after welding of duplex steel plates. Measurements of stress distributions in weld region were made by X-ray diffraction method both in ferrite and austenite phases. Duplex Steel plates were joined by GTAW (Gas Tungsten Arc Welding) technology. There were studied longitudinal and transverse stress components in welded butt joint, in heat affected zone (HAZ) and in points of base metal 10 mm from the weld. Residual stresses measured in duplex steel plates jointed by welding are caused by temperature gradients between weld zone and base metal and by difference of thermal expansion coefficients of ferrite and austenite phases. Proposed analytical model allows evaluating of residual stress distribution over the cross section in the weld region.

引用

页码：64 / 69

页数：6

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