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| Recent development of fourth generation powder metallurgy superalloys in
America and Europe |
| ZHANG Yiwen1，2，3，LIU Jiantao1，2，3，JIA Jian1，2，3，LIU Mingdong1，2，3，LI Xiaokun1，2，
BAI Jiaming1，2，4，ZHANG Haopeng1，2，LI Xinyu1，2，4，XING Pengyu1，2，3 |
| 1. Beijing CISRI-Gaona Materials Technology Co.，LTD，Beijing 100081，China； 2. Central Iron and Steel
Research Institute，High Temperature Material Institute，Beijing 100081，China；3. Beijing Key Laboratory of
Advanced High Temperature Materials，Beijing 100081，China； 4. School of Materials Science and
Engineering，Northeastern University，Shenyang，Liaoning 110819，China |
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Abstract In order to meet the service requirements of advanced aero- engines, especially hot- end components
such as high-pressure turbine disks, it is extremely necessary to develop higher-performance fourth generation powder
metallurgy superalloys. The characteristic of these materials is the achievement of a maximum service temperature
of 815℃. In this review, the fourth generation PM superalloys developed by the United States and the United
Kingdom in the past decade has been introduced. The main content is focused on ME501 and TSNA-1 alloys developed
in the US, and novel alloys developed in the UK (including high-Co and Ta content alloys, low-cost alloys
with high-Ta content and a series of RRHT alloys with high-Nb content). The design characteristics of the chemical
composition, microstructure stability, mechanical properties and oxidation resistance of these alloys are concerned
in this paper.
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Received: 15 August 2021
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2022, Vol. 32 
