EVALUATION OF HEAT AFFECTED ZONE MICROSTRUCTURE/MECHANICAL PROPERTIES OF HY-1OO GRADE STEELS

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Authors
  1. Gianetto, J.A.
  2. Bowker, J.T.
  3. Letts, M.W.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Canada Centre for Mineral and Energy Technology, Ottawa ONT (CAN) Metals Technology Labs
Abstract
An evaluation of candidate HY100 grade steels for naval vessel fabrication was carried-out using Gleeble simulation to identify the microstructural constituents, hardness and notch toughness of a range of HAZ regions which may act as local brittle zones in multipass weldments. A highly alloyed HRS 650 M steel made in France and a conventional HY100 grade steel produced in the United States were investigated. Both single and double cycled HAZ regions with two cooling times corresponding to welding energy inputs of 2 and 4kJ/mm were evaluated. The notch toughness results ar explained based on the resultant microstructure and/or hardness.
Keywords
Marine applications;HAZ
Report Number
DREA-CR-93-451;MTL-93-20(TR-R) — Contractor Report
Date of publication
01 Aug 1993
Number of Pages
39
DSTKIM No
94-01479
CANDIS No
139845
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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