Effect of homogenizing on microstructure and properties of Invar alloy ingot

doi:10.13251/j.issn.0254-6051.2022.02.023

Abstract

Abstract: Effect of heat treatment on microstructure, thermodynamic properties and impact property of Invar alloy ingot was investigated through homogenization annealing. The results show that after annealing treatment, the as-cast microstructure of the alloy is changed, the composition segregation is improved, the room temperature impact property is increased by about 7 times. Moreover, the high temperature deformation resistance is reduced, the high temperature thermoplasticity is improved, the high temperature brittleness range is reduced, and the thermal processing window becomes broader, all of which are beneficial to improve the efficiency and yield rate of hot working of the Invar alloy.

Key words: Invar alloy, segregation, high temperature thermoplasticity, impact property

CLC Number:

TG132.1

Wu Yingfei, Sun Zhonghua, Wang Yufei, Wang Chengming, Zhang Yunfei, Peng Huifen. Effect of homogenizing on microstructure and properties of Invar alloy ingot[J]. Heat Treatment of Metals, 2022, 47(2): 130-136.

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