Microsegregation behavior during solidification and homogenization of AerMet100 steel

Journal Article · Sun Feb 01 04:00:00 EST 1998 · Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science

DOI:https://doi.org/10.1007/s11663-998-0023-0· OSTI ID:616163

Lippard, H E; Campbell, C E; Dravid, V P; Olson, G B ^[1]; Bjoerklind, T; Borggren, U; Kellgren, P ^[2]

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1. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
2. Royal Inst. of Tech., Stockholm (Sweden). Div. of Computational Thermodynamics

Cast AerMet100 exhibits mechanical properties comparable to the wrought properties of competing ultrahigh-strength steels; however, the segregation behavior had not been quantified under casting conditions. A microsegregation profile of the as-cast ingot was simulated and homogenization treatments were predicted using Thermo-Calc and DICTRA software. Experimental composition analysis confirmed the simulated microsegregation profile, and the homogenization process occurred at a slightly faster rate than predicted. The convergence of theory and experiment demonstrates the feasibility of designing cast alloy compositions assisted by computer simulation to minimize segregation without casting a large experimental matrix of test ingots.

• Sponsoring Organization: USDOE
• OSTI ID: 616163
• Journal Information: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Journal Name: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science Journal Issue: 1 Vol. 29; ISSN MTBSEO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOY SYSTEMS
CASTING
HIGH ALLOY STEELS
MATHEMATICAL MODELS
SEGREGATION
SOLIDIFICATION