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Title: Recent Adavances in Modeling of Solidification Behavior

Abstract

No abstract prepared.

Authors:
 [1];  [1];  [2]
  1. ORNL
  2. Edison Welding Institute
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1003100
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: International Conference on Trends and Welding Research, Pine Mountain, GA, USA, 20050516, 20050520
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPUTERIZED SIMULATION; SOLIDIFICATION; MATHEMATICAL MODELS

Citation Formats

Vitek, John Michael, David, Stan A, and Babu, Suresh S. Recent Adavances in Modeling of Solidification Behavior. United States: N. p., 2006. Web.
Vitek, John Michael, David, Stan A, & Babu, Suresh S. Recent Adavances in Modeling of Solidification Behavior. United States.
Vitek, John Michael, David, Stan A, and Babu, Suresh S. Sun . "Recent Adavances in Modeling of Solidification Behavior". United States. doi:.
@article{osti_1003100,
title = {Recent Adavances in Modeling of Solidification Behavior},
author = {Vitek, John Michael and David, Stan A and Babu, Suresh S.},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Conference:
Other availability
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  • Work being conducted at LASL involved with the simulation of congruent melting materials is described. The work has addressed items relating to the effect of experimental and modeling parameters; minimizing human resource requirements through the use of general purpose heat transfer codes and color microfilm output; comparing finite element and finite difference modeling techniques; and calculating metal flow patterns during mold filling. (GHT)
  • The purpose of this study was to examine the effect of chemistry variations on the solidification behavior and weldability of Alloy 625. As the effect of several tramp elements (i.e., S, P, etc.) could be predicted a priori, the experimental alloy design excluded these elements as factors. A 3-factor, 2-level, full fractorial experimental design was examined with the elements Nb(0 wt%, 3.5 wt%), C(0.005 wt.%, 0.035 wt.%), and Si(0.01 wt.%, 0.40 wt.%) being chosen to fill the design matrix. Compositions of the alloys studied are listed. These compositions were prepared using VIM/VAR techniques in the Sandia National Laboratories Melting andmore » Solidification Facility. Conventional hot and cold working techniques were used to produce 3 mm thick sheet for Varestraint weldability testing. Differential thermal analysis (DTA) was used to establish significant solidification temperatures and reactions. Greater experimental detail has been given previously. 2 refs., 2 figs., 2 tabs.« less
  • A series of experiments that combined thermal analysis and interrupted solidification was carried out to understand the solidification behavior of type 308 stainless steel weld metal. Results indicate the following sequence of phase separations for the alloy investigated: L ..-->.. L + delta ..-->.. L + delta + ..gamma.. ..-->.. ..gamma.. + delta. Ferrite observed at room temperature was identified as the untransformed primary delta-ferrite that formed during the initial stages of solidification. The mode of freezing and the extent of solid-state diffusion both control the amount and distribution of ferrite. Microstructural and microprobe analyses indicated both extensive solid-state transformationmore » and solute redistribution during solidification and cooling from the nonequilibrium solidus to room temperature.« less
  • Abstract not provided.