铸造镍基高温合金K439B的组织及典型性能

doi:10.13251/j.issn.0254-6051.2023.01.017

金属热处理 ›› 2023, Vol. 48 ›› Issue (1): 100-104.DOI: 10.13251/j.issn.0254-6051.2023.01.017

铸造镍基高温合金K439B的组织及典型性能

陈晶阳, 任晓冬, 张明军, 张丽辉, 汤鑫, 肖程波

北京航空材料研究院先进高温结构材料重点实验室, 北京 100095

收稿日期:2022-09-12 修回日期:2022-09-15 出版日期:2023-01-25 发布日期:2023-02-03
通讯作者: 肖程波,研究员,博士,E-mail:cbxiao0288@sina.com
作者简介:陈晶阳(1979—),男,高级工程师,博士,主要研究方向为镍基高温合金及其精密铸造,E-mail:jingyang.chen@biam.ac.cn。
基金资助:
国家科技重大专项(J2019-VI-0004-0117);先进高温结构材料重点实验室基金(6142903220101,6142903210104)

Microstructure and typical properties of cast Ni-based superalloy K439B

Chen Jingyang, Ren Xiaodong, Zhang Mingjun, Zhang Lihui, Tang Xin, Xiao Chengbo

Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, China

Received:2022-09-12 Revised:2022-09-15 Online:2023-01-25 Published:2023-02-03

摘要/Abstract

摘要： 介绍了铸造镍基高温合金K439B的典型显微组织、800 ℃长期时效组织稳定性和主要性能,并与K4169和CM939合金进行了比较。结果表明,K439B合金的拉伸性能和承温能力达到CM939合金水平,800 ℃抗氧化性能和涂盐热腐蚀性能优于K4169合金,800 ℃燃气热腐蚀性能与K4169合金相当,具有较低的焊接热裂纹敏感性,综合性能优良,已经在燃烧室机匣、预旋喷嘴、喷嘴环导向器等先进航空发动机和燃气轮机热端部件上获得应用。

关键词: 镍基高温合金, K439B合金, 航空发动机, 燃气轮机, 显微组织, 性能

Abstract: Typical microstructure, long-term aging microstructural stability at 800 ℃ and main properties of cast Ni-based superalloy K439B were introduced and compared with that of K4169 and CM939 alloys. The results show that the K439B alloy has good comprehensive properties, and its tensile properties and temperature capability are equivalent to that of the CM939 alloy. The oxidation resistance and salt-coated hot-corrosion properties of the K439B alloy are better than that of the K4169 alloy at 800 ℃, and its gas hot-corrosion property is similar to that of the K4169 alloy at 800 ℃. Meanwhile, the K439B alloy is unsusceptible to the welding hot cracking. It has been applied in the casting of hot-section components for advanced aero engines and gas turbines such as combustor case, preswirl nozzle and nozzle ring, etc.

Key words: Ni-based superalloy, K439B alloy, aero engine, gas turbine, microstructure, property

中图分类号:

TG249.5

陈晶阳, 任晓冬, 张明军, 张丽辉, 汤鑫, 肖程波. 铸造镍基高温合金K439B的组织及典型性能[J]. 金属热处理, 2023, 48(1): 100-104.

Chen Jingyang, Ren Xiaodong, Zhang Mingjun, Zhang Lihui, Tang Xin, Xiao Chengbo. Microstructure and typical properties of cast Ni-based superalloy K439B[J]. Heat Treatment of Metals, 2023, 48(1): 100-104.

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铸造镍基高温合金K439B的组织及典型性能

Microstructure and typical properties of cast Ni-based superalloy K439B

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