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| Recent development of new type powder metallurgy superalloys in Russia |
| ZHANG Yiwen1，2，3，JIA Jian1，2，3，LIU Jiantao1，2，3，QU Jinglong1，2，3 |
| 1Beijing CISRI-Gaona Materials Technology Co.，LTD，Beijing 100081，China；
2Beijing Key Laboratory of Advanced High Temperature Materials，Beijing 100081，China；
3 Central Iron and Steel Research Institute，High Temperature Material Institute，Beijing 100081，China |
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Abstract This article reviews the research progress of powder metallurgy（PM）superalloys in Russia from 2015
to 2019. The microstructure and mechanical properties of ВВП nickel base PM superalloys are overviewed，such
as ВВ750П，ВВ751П，ВВ752П and ВВ753П，which are developed by Russian Institute of Light Alloy（ВИЛС）.
It is also reviewed the microstructure and mechanical properties of a new kind of PM superalloy named ВЖ178П，
which is developed by Russian Institute of Aeronautical Materials（ВИАМ）. ВИЛС prepared disk billet by plasma
rotating electrode process（PREP）and as-hot isostatic pressing（as-HIP）. Since October 2014，ВВ751П alloy powder
with particle size of no more than 70μm has been used by ВИЛС to produce disk for ПД14 engine. ВИАМ
adopts argon atomization（AA）and PREP to prepare alloy powders. The particle size distribution，gas content in
powders，preparation technology，microstructure characteristics，microstructure and process plasticity of HIP billet，
and microstructure and mechanical properties of forgin ingot were compared between AA powders and PREP
powders. ВИАМ developed the disk billet（320 mm in diameter）of ВЖ178П alloy by HIP and isothermal forging
process，and the mechanical properties of this alloy were better than those of the same kind in Russia and abroad.
Compared with AA powders，PREP powders ensure that the deformed disk has higher mechanical properties at
room temperature. Using PREP ВЖ178П powders and as-HIP process，full-scale experimental disk billet（600 mm
in diameter）was first developed，and its mechanical properties met the modern requirements of areo-engine disk
materials.
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Received: 30 July 2020
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2021, Vol. 31 
