均匀化温度对K465合金组织与性能的影响

doi:10.13251/j.issn.0254-6051.2022.01.028

金属热处理 ›› 2022, Vol. 47 ›› Issue (1): 167-171.DOI: 10.13251/j.issn.0254-6051.2022.01.028

均匀化温度对K465合金组织与性能的影响

王树森¹, 王振江², 高明远², 柴宏宇², 曹夕², 桑志茹²

1.中国人民解放军海军装备部驻沈阳地区军事代表局驻鞍山地区军事代表室, 辽宁鞍山 114001;
2.中国科学院金属研究所师昌绪先进材料创新中心, 辽宁沈阳 110016

收稿日期:2021-09-14 修回日期:2021-11-02 出版日期:2022-01-25 发布日期:2022-02-18
通讯作者: 曹夕,助理工程师,E-mail:xcao@imr.ac.cn
作者简介:王树森(1982—),男,工程师,硕士,主要研究方向为舰船材料,E-mail:446757808@qq.com。

Effect of homogenizing temperature on microstructure and mechanical properties of K465 superalloy

Wang Shusen¹, Wang Zhenjiang², Gao Mingyuan², Chai Hongyu², Cao Xi², Sang Zhiru²

1. Anshan Military Representative Office of Shenyang Military Representative Bureau, Naval Equipment Department of the Chinese People's Liberation Army, Anshan Liaoning 114001, China;
2. Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China

Received:2021-09-14 Revised:2021-11-02 Online:2022-01-25 Published:2022-02-18

摘要/Abstract

摘要： 通过对K465镍基高温合金不同温度均匀化处理后的组织形貌观察及力学性能测试,研究了均匀化温度对K465合金显微组织及力学性能的影响。结果表明,在γ′相固溶温度以下(1160 ℃)均匀化后,γ′相尺寸较铸态大;在接近γ′相固溶温度(1210 ℃)均匀化后,合金中的γ′体积分数约为54%,尺寸均匀且立方化程度较高;在1260 ℃均匀化后,γ′相呈小颗粒状弥散分布,并且晶内出现胞状结构。随着均匀化温度的升高,合金的枝晶偏析情况减弱,碳化物由发达的骨架状逐渐转变为短棒状以及块状。热处理工艺为1210 ℃×4 h时合金具有最佳的综合性能。

关键词: K465合金, 均匀化温度, 显微组织, 力学性能

Abstract: Effect of homogenizing temperature on microstructure and mechanical properties of K465 nickel-based superalloy was studied by microstructure observation and mechanical properties tast of the K465 alloy homogenized at different temperatures. The results show that when homogenized at 1160 ℃, the size of γ′ phase is larger than that of the as-cast. When homogenized near the solid solution temperature of γ′ phase (1210 ℃), the volume fraction of γ′ in the alloy is approximately 54% with uniform size and high cube degree. The γ′ is dispersed and distributed in the form of small particles, and a cellular structure appears in the microstructure homogenized at 1260 ℃. The dendrite segregation of the alloy decreases and the carbides gradually change from a developed framework to short rods and blocks as the homogenizing temperature increases. The alloy has the best comprehensive properties when homogenized at 1210 ℃ for 4 h.

Key words: K465 alloy, homogenization temperature, microstructure, mechanical properties

中图分类号:

TG113.25

王树森, 王振江, 高明远, 柴宏宇, 曹夕, 桑志茹. 均匀化温度对K465合金组织与性能的影响[J]. 金属热处理, 2022, 47(1): 167-171.

Wang Shusen, Wang Zhenjiang, Gao Mingyuan, Chai Hongyu, Cao Xi, Sang Zhiru. Effect of homogenizing temperature on microstructure and mechanical properties of K465 superalloy[J]. Heat Treatment of Metals, 2022, 47(1): 167-171.

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均匀化温度对K465合金组织与性能的影响

Effect of homogenizing temperature on microstructure and mechanical properties of K465 superalloy

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