Changes in the structural and textural state of titanium alloy VT41 after hot upsetting and annealing-Reference-Cited by-同舟云学术

Changes in the structural and textural state of titanium alloy VT41 after hot upsetting and annealing

Published:2021-12-03 Issue:3(107) Volume: Page:40-50
ISSN:1994-6716
Container-title:Voprosy Materialovedeniya
language:
Short-container-title:Vopr. materialoved.

Author:

Medvedev P. N.¹,Naprienko S. A.¹,Kashapov O. S.¹,Filonova E. V.¹

Affiliation:

1. Federal State Unitary Enterprise “All-Russian Scientific Research Institute of Aviation Materials” (FSUE VIAM)

Abstract

A study of the structure of titanium alloy VT41 (Ti–Al–Si–Zr–Sn– β-stabilizers) was carried out on a sample subjected to hot upsetting in the (α+β)-region – conditions simulating the stamping of a disk of a gas turbine engine (GTE). The features of the formation of the textural state of primary and secondary globular grains, as well as the kinetics of their dissolution with an increase in the annealing temperature, have been determined. As a result of heat treatment at 995°C, the homogeneity of the alloy structure significantly increases comparing to the deformed state, which is associated with the recrystallization of lamellar and small-globular grains and the retention of primary globular grains of the α-phase. The sequence of structural changes has been established during the annealing within the temperature range from 950 to 1040°C.

Publisher

FSUE CRISM Prometey

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