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Title: Influence of chromium on the mechanical properties and microstructure of weld metal from a high-strength SMA electrode

Abstract

In the present work, the influence of Cr on mechanical properties and microstructure of weld metal from a high-strength SMA electrode is analyzed by considering 12 experimental low-alloy low-hydrogen iron powder AWS E10018, E11018, E12018-M type covered electrodes. These electrodes were manufactured to obtain in the weld deposits Cr contents ranging from 0 to 1.8%, with two different Mn levels for each Cr content, maintaining the amount of other elements at a fixed value. All-weld-metal specimens and production type single V-groove welds were mechanically tested in the as-welded and stress-relieved conditions, and a metallographic study was conducted. Chromium was found to be deleterious to toughness with only a minor influence due to Mn variations. A postweld heat treatment led in all cases to a reduction of toughness. Increasing Cr content in the welds produced a higher proportion of acicular ferrite and a general refinement of the microstructure.

Authors:
;  [1];  [2];  [3]
  1. Conarco Alambres y Soldaduras, Buenos Aires (Argentina)
  2. Intema, Buenos Aires (Argentina)
  3. Fundacion Latinoameriacana de Soldadura, Buenos Aires (Argentina)
Publication Date:
OSTI Identifier:
5047948
Resource Type:
Journal Article
Journal Name:
Welding Journal (Miami); (United States)
Additional Journal Information:
Journal Volume: 73:3; Journal ID: ISSN 0043-2296
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CHROMIUM; METALLURGICAL EFFECTS; WELDED JOINTS; MECHANICAL PROPERTIES; MICROSTRUCTURE; FRACTURE PROPERTIES; MANGANESE; ELEMENTS; JOINTS; METALS; TRANSITION ELEMENTS; 360102* - Metals & Alloys- Structure & Phase Studies; 360103 - Metals & Alloys- Mechanical Properties

Citation Formats

Surian, E, Trotti, J, Cassanelli, A, and Vedia, L.A. De. Influence of chromium on the mechanical properties and microstructure of weld metal from a high-strength SMA electrode. United States: N. p., 1994. Web.
Surian, E, Trotti, J, Cassanelli, A, & Vedia, L.A. De. Influence of chromium on the mechanical properties and microstructure of weld metal from a high-strength SMA electrode. United States.
Surian, E, Trotti, J, Cassanelli, A, and Vedia, L.A. De. Tue . "Influence of chromium on the mechanical properties and microstructure of weld metal from a high-strength SMA electrode". United States.
@article{osti_5047948,
title = {Influence of chromium on the mechanical properties and microstructure of weld metal from a high-strength SMA electrode},
author = {Surian, E and Trotti, J and Cassanelli, A and Vedia, L.A. De},
abstractNote = {In the present work, the influence of Cr on mechanical properties and microstructure of weld metal from a high-strength SMA electrode is analyzed by considering 12 experimental low-alloy low-hydrogen iron powder AWS E10018, E11018, E12018-M type covered electrodes. These electrodes were manufactured to obtain in the weld deposits Cr contents ranging from 0 to 1.8%, with two different Mn levels for each Cr content, maintaining the amount of other elements at a fixed value. All-weld-metal specimens and production type single V-groove welds were mechanically tested in the as-welded and stress-relieved conditions, and a metallographic study was conducted. Chromium was found to be deleterious to toughness with only a minor influence due to Mn variations. A postweld heat treatment led in all cases to a reduction of toughness. Increasing Cr content in the welds produced a higher proportion of acicular ferrite and a general refinement of the microstructure.},
doi = {},
journal = {Welding Journal (Miami); (United States)},
issn = {0043-2296},
number = ,
volume = 73:3,
place = {United States},
year = {1994},
month = {3}
}