ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 8

Predicting Heat-Affected Zone Hardness by the Weld Test Method

Bibby, MJ
Professor, graduate student, and professor and head, Carleton University, Ottawa,

Chong, L-M
Professor, graduate student, and professor and head, Carleton University, Ottawa,

Goldak, JA
Professor, graduate student, and professor and head, Carleton University, Ottawa,

Abstract

The “weld test method” of predicting heat-affected zone (HAZ) hardness first suggested by Stout el al is further developed in this investigation. The contemporary heat flow analysis of Adams and Jhaveri et al, and conclusions from the recent particularly relevant hardness-heat flow investigation of Graville are incorporated into the model. A “welding hardness diagram” is suggested to represent the test data and to simplify the task of predicting HAZ hardness. Experimental hardness results are compared to predicted values for a relatively wide range of carbon-manganese and low alloy structural steels in support of the welding hardness diagram approach. The relative merits of this procedure compared to the recent mathematical methods suggested by Bastien et al and by Arata et al for predicting HAZ hardness are discussed.

Keywords:
hardness, welding, heat affected zone, weld test method, heat flow, cooling rate, cooling time, structural steels

Paper ID: JTE10281J
DOI: 10.1520/JTE10281J
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