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Title: Stressed Heat Affected Zone Simulations of AerMet 100 Alloy

Abstract

AerMet 100 is a high strength, high fracture toughness alloy designed for use in aerospace applications. In previous work the welding behavior of this alloy has been evaluated, and it has been shown that a softened region in the heat-affected zone (HAZ) is a principal feature of the weld zone. A model for this softening, based on classical theories of precipitate coarsening and isothermal softening data, was developed and found to provide a reasonable description for weld thermal cycle simulation (Gleeble) experiments. Recent work has shown, however, that softening in real welds is not always well predicted by this model, so that additional effects, which are not captured in conventional Gleeble thermal cycle simulations must be addressed. In particular, the stresses associated with real weld HAZ's may modify the softening kinetics. In the current work, Gleeble simulations in both stress-free and stressed conditions have been conducted and the kinetics compared. The accuracy of the thermal model predictions have also been considered regarding their impact on estimated hardness values.

Authors:
;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
9688
Report Number(s):
SAND99-2004C
TRN: AH200125%%7
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Student Intern Symposium and Career Fair, Albuquerque, NM (US), 08/05/1999; Other Information: PBD: 3 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; FRACTURE PROPERTIES; HARDNESS; HEAT AFFECTED ZONE; COMPUTERIZED SIMULATION; STRESSES; WELDING

Citation Formats

Puskar, Joseph D., and Smith, Mark F. Stressed Heat Affected Zone Simulations of AerMet 100 Alloy. United States: N. p., 1999. Web.
Puskar, Joseph D., & Smith, Mark F. Stressed Heat Affected Zone Simulations of AerMet 100 Alloy. United States.
Puskar, Joseph D., and Smith, Mark F. Tue . "Stressed Heat Affected Zone Simulations of AerMet 100 Alloy". United States. https://www.osti.gov/servlets/purl/9688.
@article{osti_9688,
title = {Stressed Heat Affected Zone Simulations of AerMet 100 Alloy},
author = {Puskar, Joseph D. and Smith, Mark F.},
abstractNote = {AerMet 100 is a high strength, high fracture toughness alloy designed for use in aerospace applications. In previous work the welding behavior of this alloy has been evaluated, and it has been shown that a softened region in the heat-affected zone (HAZ) is a principal feature of the weld zone. A model for this softening, based on classical theories of precipitate coarsening and isothermal softening data, was developed and found to provide a reasonable description for weld thermal cycle simulation (Gleeble) experiments. Recent work has shown, however, that softening in real welds is not always well predicted by this model, so that additional effects, which are not captured in conventional Gleeble thermal cycle simulations must be addressed. In particular, the stresses associated with real weld HAZ's may modify the softening kinetics. In the current work, Gleeble simulations in both stress-free and stressed conditions have been conducted and the kinetics compared. The accuracy of the thermal model predictions have also been considered regarding their impact on estimated hardness values.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}

Conference:
Other availability
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