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Title: Influence of Alloy and Solidification Parameters on Grain Refinement in Aluminum Weld Metal due to Inoculation

Abstract

The goals are: (1) Establish how much Ti/B grain refiner is need to completely refine aluminum weld metal for different alloys and different welding conditions; (2) Characterize how alloy composition and solidification parameters affect weld metal grain refinement; and (3) Apply relevant theory to understand observed behavior. Conclusions are: (1) additions of Ti/B grain refiner to weld metal in Alloys 1050, 5083, and 6082 resulted in significant grain refinement; (2) grain refinement was more effective in GTAW than LBW, resulting in finer grains at lower Ti content - reason is limited time available for equiaxed grain growth in LBW (inability to occlude columnar grain growth); (3) welding travel speed did not markedly affect grain size within GTAW and LBW clusters; and (4) application of Hunt CET analysis showed experimental G to be on the order of the critical G{sub CET}; G{sub CET} was consistently higher for GTAW than for LBW.

Authors:
 [1];  [2];  [3];  [2];  [1];  [1]
  1. BAM, Germany
  2. BIAS, Germany
  3. Los Alamos National Laboratory
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
BAM, Germany
OSTI Identifier:
1044869
Report Number(s):
LA-UR-12-22557
TRN: US201214%%540
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: Trends in Welding Research ; 2012-06-04 - 2012-06-08 ; Chicago, Illinois, United States
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; ALLOYS; ALUMINIUM; GRAIN GROWTH; GRAIN REFINEMENT; GRAIN SIZE; INOCULATION; SOLIDIFICATION; VELOCITY; WELDING

Citation Formats

Schempp, Philipp, Tang, Z., Cross, Carl E., Seefeld, T., Pittner, A., and Rethmeier, M. Influence of Alloy and Solidification Parameters on Grain Refinement in Aluminum Weld Metal due to Inoculation. United States: N. p., 2012. Web.
Schempp, Philipp, Tang, Z., Cross, Carl E., Seefeld, T., Pittner, A., & Rethmeier, M. Influence of Alloy and Solidification Parameters on Grain Refinement in Aluminum Weld Metal due to Inoculation. United States.
Schempp, Philipp, Tang, Z., Cross, Carl E., Seefeld, T., Pittner, A., and Rethmeier, M. Thu . "Influence of Alloy and Solidification Parameters on Grain Refinement in Aluminum Weld Metal due to Inoculation". United States. https://www.osti.gov/servlets/purl/1044869.
@article{osti_1044869,
title = {Influence of Alloy and Solidification Parameters on Grain Refinement in Aluminum Weld Metal due to Inoculation},
author = {Schempp, Philipp and Tang, Z. and Cross, Carl E. and Seefeld, T. and Pittner, A. and Rethmeier, M.},
abstractNote = {The goals are: (1) Establish how much Ti/B grain refiner is need to completely refine aluminum weld metal for different alloys and different welding conditions; (2) Characterize how alloy composition and solidification parameters affect weld metal grain refinement; and (3) Apply relevant theory to understand observed behavior. Conclusions are: (1) additions of Ti/B grain refiner to weld metal in Alloys 1050, 5083, and 6082 resulted in significant grain refinement; (2) grain refinement was more effective in GTAW than LBW, resulting in finer grains at lower Ti content - reason is limited time available for equiaxed grain growth in LBW (inability to occlude columnar grain growth); (3) welding travel speed did not markedly affect grain size within GTAW and LBW clusters; and (4) application of Hunt CET analysis showed experimental G to be on the order of the critical G{sub CET}; G{sub CET} was consistently higher for GTAW than for LBW.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {6}
}

Conference:
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