Aging-Induced Transformations of Maraging-400 Alloys

Aging-Induced Transformations of Maraging-400 Alloys Aging-Induced Transformations of Maraging-400 Alloys T.J.B. ALVES, G.C.S. NUNES, L.F.S. TUPAN, P.W.C. SARVEZUK, F.F. IVASHITA, C.A.S. DE OLIVEIRA, and A. PAESANO Jr. Solubilized maraging-400 alloys were aged at 480 C, 580 C, and 650 C, for 3, 6, and 12 hours and characterized by X-ray diffraction (Rietveld refinement), Mossbauer spectroscopy, and microhardness tests. The results revealed that the aging treatments induced an atomic rearrangement in the martensite phase, involving a change in the composition and lattice parameters, reversion of austenite, and, in some samples, the formation of the l phase. The amounts of reverted and precipitated phases were dependent on the aging time and temperature. The tetragonal distortion from cubic symmetry, usually presented by martensite in solution-an- nealed maraging steels, was not eliminated after aging. The results obtained for these maraging-400 alloys are compared with those obtained for maraging-350 steel samples. https://doi.org/10.1007/s11661-018-4724-y The Minerals, Metals & Materials Society and ASM International 2018 I. INTRODUCTION transformation and precipitation during aging, in com- parison with aged maraging-350 steels. Therefore, it is AMONG the maraging steels, the maraging-400 has very interesting to go on with this investigation in order the highest cobalt content and presents the greatest yield to better understand the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Metallurgical and Materials Transactions A Springer Journals

Aging-Induced Transformations of Maraging-400 Alloys

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Publisher
Springer US
Copyright
Copyright © 2018 by The Minerals, Metals & Materials Society and ASM International
Subject
Materials Science; Metallic Materials; Characterization and Evaluation of Materials; Structural Materials; Surfaces and Interfaces, Thin Films; Nanotechnology
ISSN
1073-5623
eISSN
1543-1940
D.O.I.
10.1007/s11661-018-4724-y
Publisher site
See Article on Publisher Site

Abstract

Aging-Induced Transformations of Maraging-400 Alloys T.J.B. ALVES, G.C.S. NUNES, L.F.S. TUPAN, P.W.C. SARVEZUK, F.F. IVASHITA, C.A.S. DE OLIVEIRA, and A. PAESANO Jr. Solubilized maraging-400 alloys were aged at 480 C, 580 C, and 650 C, for 3, 6, and 12 hours and characterized by X-ray diffraction (Rietveld refinement), Mossbauer spectroscopy, and microhardness tests. The results revealed that the aging treatments induced an atomic rearrangement in the martensite phase, involving a change in the composition and lattice parameters, reversion of austenite, and, in some samples, the formation of the l phase. The amounts of reverted and precipitated phases were dependent on the aging time and temperature. The tetragonal distortion from cubic symmetry, usually presented by martensite in solution-an- nealed maraging steels, was not eliminated after aging. The results obtained for these maraging-400 alloys are compared with those obtained for maraging-350 steel samples. https://doi.org/10.1007/s11661-018-4724-y The Minerals, Metals & Materials Society and ASM International 2018 I. INTRODUCTION transformation and precipitation during aging, in com- parison with aged maraging-350 steels. Therefore, it is AMONG the maraging steels, the maraging-400 has very interesting to go on with this investigation in order the highest cobalt content and presents the greatest yield to better understand the

Journal

Metallurgical and Materials Transactions ASpringer Journals

Published: Jun 4, 2018

References

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