Design and development of hot corrosion-resistant nickel-base single-crystal superalloys by the d-electrons alloy design theory: Part I--Characterization of the phase stability

Journal Article · Mon Nov 01 04:00:00 EST 1993 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

DOI:https://doi.org/10.1007/BF02646523· OSTI ID:5859129

Zhang, J S ^[1]; Hu, Z Q ^[2]; Murata, Y; Morinaga, M; Yukawa, N ^[3]

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1. Academia Sinica, Shenyang (China). Inst. of Metal Research Beijing Univ. of Science and Technology, (China). Dept. of Materials Science and Engineering
2. Academia Sinica, Shenyang (China). Inst. of Metal Research
3. Toyohashi Univ. of Technology, (Japan). Dept. of Production Systems Engineering

As the first step to design the new hot corrosion-resistant nickel-base single-crystal superalloys by the d-electrons alloy design theory (or the New PHACOMP), an evaluation of the phase stability of the modified hot corrosion-resistant IN738LC nickel-base superalloys (Ni-16Cr-9.5Al-4.0Ti-8.0-Co-0.55Nb-0.06Zr-0.05B-0.47C-(0 [approximately]3) Ta-(0 [approximately] 3)W-(0 [approximately] 3) Mo (in atomic percent)) was conducted with the alloy design theory. The critical conditions for suppressing the precipitation of the brittle [sigma] phase can be described by the electronic parameters [ovr Mdt] [le] 0.991 and [ovr Md[gamma]] [le] 0.93 which can be applied to the d-electrons alloy design of hot corrosion resistant nickel-base superalloys with high Cr contents.

• OSTI ID: 5859129
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 24:11; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CORROSION RESISTANCE
DESIGN
EQUATIONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 738
INCONEL ALLOYS
MATERIALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
PHASE STUDIES
STABILITY