Development of methodology for measurements of residual stresses in welded joint based on displacement of points in a coordinated table

Residual stresses in a welded joint of ASTM A131 grade AH32 steel was measured either by the X-ray diffraction or by displacements of referenced points measured on a coordinate measuring machine before and after heat treatment. For all tests, the welding was performed with Shielded Metal Arc Welding...

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Bibliographic Details
Published in:	Materials research (São Carlos, São Paulo, Brazil) Vol. 16; no. 2; pp. 322 - 326
Main Authors:	Siqueira Filho, Aníbal Veras, Rolim, Tiago Leite, Yadava, Yogendra Prasad, Cardoso, Francisco Ilo Bezerra, Guimarães, Pablo Batista, Maciel, Theophilo Moura, Ferreira, Ricardo Artur Sanguinetti
Format:	Journal Article
Language:	English
Published:	ABM, ABC, ABPol 01-04-2013 Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
Subjects:	coordinate measuring machine ENGINEERING, CHEMICAL MATERIALS SCIENCE, MULTIDISCIPLINARY METALLURGY & METALLURGICAL ENGINEERING residual stress X-Ray diffraction residual stress coordinate measuring machine X-Ray diffraction
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Summary:	Residual stresses in a welded joint of ASTM A131 grade AH32 steel was measured either by the X-ray diffraction or by displacements of referenced points measured on a coordinate measuring machine before and after heat treatment. For all tests, the welding was performed with Shielded Metal Arc Welding, vertical-up position, by a certified welder. After welding, some specimens were subjected to marking, made through small holes evenly spaced and mapped on a coordinate measuring machine. After labeling, the samples were subjected to heat treatment at temperatures nearby recrystallization. After heat treatment, the samples were subjected to new measurements by coordinate measuring machine to evaluate the displacements of the points produced by the recrystallization. In parallel, residual stress measurements were made by XRD for validation of this new methodology. The results obtained either by X-ray or by coordinate measuring machine showed a good correlation between the two measurement methodologies employed.
ISSN:	1516-1439 1980-5373 1980-5373
DOI:	10.1590/S1516-14392013005000001