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| The hot deformation behavior of a new nickel-based powder superalloy |
| HUOWanchen1，LIU Jiantao1，2,3，ZHANG Ming1，2,3，QU Jinglong1，2,3 |
| 1 High Temperature Materials Research Institute，Central Iron and Steel Research Institute，Beijing 100081，
China； 2 Beijing Key Laboratory of Advanced High Temperature Materials，Beijing 100081，China；
3 Beijing CISRI-GAONA Materials & Technology CO. LTD，Beijing 100081，China |
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Abstract Abstract：The gleeble-3800 thermal simulation machine was used to conduct unidirectional thermal compression
deformation experiment on the new Ni-base superalloy NPM. The deformation temperature was 1 000~1 138 ℃
and the strain rate was 0.01~10 s- 1. The results show that under the same strain, when the temperature is constant,
the greater the strain rate, the greater the flow stress; when the strain rate is constant, the higher the temperature,
the smaller the flow stress; the average grain size decreases with the increasing of the strain rate, as the deformation
temperature increases, it first decreases and then gradually increases; the recrystallization fraction increases as
the deformation temperature and strain rate increase.
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Received: 14 December 2019
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Corresponding Authors:
刘建涛(1974—)，男，教授级高级工程师，主要研究方向为粉末高温合金。
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2021, Vol. 31 
