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Title: Microstructure and mechanical properties of V–4Ti–4Cr alloy as a function of the chemical heat treatment regimes

The regularities of the formation of a heterophase structure and mechanical properties of V–4Ti–4Cr alloy as a function of thermomechanical and chemical heat treatments are studied. The regimes of thermomechanical treatment which provide the formation of a heterophase structure with a homogeneous volume distribution of oxycarbonitride nanoparticles with a size of about 10 nm and an increase in the volume content and thermal stability of this phase and which provide an increase in the temperature of alloy recrystallization are developed. The formation of the heterophase structure results in a substantial (up to 70%) increase in the short-term high-temperature strength of the alloy at T = 800°C. The increase in the strength is achieved while keeping a rather high level of plasticity.
Authors:
; ; ; ; ;  [1] ; ; ; ; ;  [2]
  1. Bochvar High-Technology Research Institute of Inorganic Materials (Russian Federation)
  2. Russian Academy of Sciences, Institute of Strength Physics and Materials Science, Siberian Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22471978
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 78; Journal Issue: 10; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CHROMIUM ALLOYS; MICROSTRUCTURE; NANOPARTICLES; PHASE STABILITY; PLASTICITY; RECRYSTALLIZATION; TEMPERATURE DEPENDENCE; THERMOMECHANICAL TREATMENTS; TITANIUM ALLOYS; VANADIUM ALLOYS