改型的GH4145镍基合金

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材料工程 ›› 2000, Vol. 0 ›› Issue (11) : 23-25.

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高温材料力学性能

改型的GH4145镍基合金

于茂军¹, 王伟莉²

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The Development of GH4145 Superalloy

YU Mao-jun¹, WANG Wei-li²

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摘要

为了提高改型的GH4145合金的中温塑韧性,消除缺口敏感性,研究了不同热处理工艺对合金性能的影响,结果表明,在适当的热处理条件下,改型的GH4145合金在500～700℃区的塑性得到改善,并且消除了缺口敏感性,达到了汽轮机紧固件用材料的技术要求。

Abstract

On the base of inconel X-750 alloy, GH4145 alloy was developed by adding Mg,Zr and B.Using proper heat treatment, GH4145 alloy possesses higher plasticity at the temperature range of 500～700℃,and eliminates notch sensitivities compared with Inconel X-750. The new alloy can meet the requirement of steam turbine fastening bolts.