长期时效对高钨镍基高温合金碳化物演变的影响

穆岩; 王树森; 仉凤江; 王振江; 荀淑玲; 陈茂凯; 侯桂臣

doi:10.15980/j.tzzz.2021.09.018

研究·合金工艺 | 浏览量 : 0 下载量: 26 CSCD: 0

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长期时效对高钨镍基高温合金碳化物演变的影响
Effect of Long-term Thermal Exposure on Carbides Evolution in High Tungsten Ni-based Superalloy
2021年41卷第9期页码：1148-1152
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.09.018

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穆岩, 王树森, 仉凤江, 等. 长期时效对高钨镍基高温合金碳化物演变的影响[J]. 特种铸造及有色合金杂志, 2021,41(9):1148-1152.

Mu Yan, Wang Shusen, Zhang Fengjiang, et al. Effect of Long-term Thermal Exposure on Carbides Evolution in High Tungsten Ni-based Superalloy[J]. Special Casting & Nonferrous Alloys, 2021,41(9):1148-1152.
穆岩, 王树森, 仉凤江, 等. 长期时效对高钨镍基高温合金碳化物演变的影响[J]. 特种铸造及有色合金杂志, 2021,41(9):1148-1152. DOI： 10.15980/j.tzzz.2021.09.018.

Mu Yan, Wang Shusen, Zhang Fengjiang, et al. Effect of Long-term Thermal Exposure on Carbides Evolution in High Tungsten Ni-based Superalloy[J]. Special Casting & Nonferrous Alloys, 2021,41(9):1148-1152. DOI： 10.15980/j.tzzz.2021.09.018.

摘要

采用SEM、TEM和EPMA等分析方法对高钨镍基高温合金在1 000℃长期时效期间的碳化物演变行为进行了研究。结果表明

随着长期时效进行

合金中初生的MC型碳化物可分解为M

C型碳化物

且数量随时效时间延长而增加。当时效时间为500 h时

颗粒状M

C型碳化物转变为块状

并在时效1 000 h后逐渐转变为短棒状。时效1 500 h后

合金中的M

C型碳化物主要呈针状。

Abstract

The carbide evolution behavior of a high tungsten nickel-based superalloy during long-term aging at 1 000 ℃ was investigated by several analysis methods such as SEM

TEM and EPMA. The results indicate that primary MC carbides of the alloy are decomposed into M

C carbides

of which the amount is increased as the prolongation of thermal exposure time. When exposed for 500 h

the morphology of M

C carbides is converted from granular to blocky

and gradually transformed into rod-like after thermal exposure for 1 000 h. The morphology of M

C carbides of the alloy is dominated by the needle-like after thermal exposure for 1 500 h.

关键词

长期时效高钨镍基高温合金碳化物演变

Keywords

Long-term Thermal ExposureHigh Tungsten Ni-based SuperalloyCarbide Evolution

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