Structural and compositional changes during isothermal annealing of {alpha}{double_prime}-martensite in Ti-8 wt.% Mo alloy

Journal Article · Mon Sep 15 04:00:00 EDT 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(97)00183-8· OSTI ID:540987

Ivasishin, O M; Ustinov, A I; Skorodzievskii, V S; Kosenko, M S; Matviychuk, Yu V; Azamatova, F I ^[1]

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1. Ukrainian Academy of Sciences, Kiev (Ukraine). Inst. for Metal Physics

There are many discrepancies in the literature concerning the structure of martensite in titanium alloys with isomorphous {beta}-stabilizing elements and the mechanism of its decomposition on ageing. It has been proposed that the {alpha}{double_prime}-martensite crystal structure results from the isomorphic decomposition of the hexagonal solid solution during the {beta} {yields} {alpha}{double_prime} martensite transformation. Decomposition begins during cooling (due to relatively high M{sub s} temperature) and continues during ageing. To check this hypothesis, the structural changes in the Ti-8 wt.% Mo alloy during ageing have been studied in this work to establish a correlation between the CI parameters and rhombic distortions of the {alpha}{double_prime}-martensite lattice.

• OSTI ID: 540987
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 6 Vol. 37; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
HEXAGONAL LATTICES
LATTICE PARAMETERS
MARTENSITE
MOLYBDENUM ALLOYS
ORTHORHOMBIC LATTICES
SOLID SOLUTIONS
TITANIUM ALLOYS