铸态Cu-1.16Ni-0.36Cr合金热变形行为及热加工图

doi:10.11896/cldb.22040205

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Abstract Hot compressive deformation behavior of Cu-1.16Ni-0.36Cr alloy at the temperatures from 750 ℃ to 950 ℃ and the strain rates from 0.01 s^-1 to 10 s^-1 was studied on a Gleeble-1500 thermal simulator. The constitutive equation and processing diagram of the alloy were established. The results showed that the dynamic recovery of Cu-1.16Ni-0.36Cr alloy was dominant at the strain temperature between 700 ℃ to 900 ℃, and dynamic recrystallization took place at 950 ℃. The constitutive equation and processing diagram were obtained by the true stress-strain curve. Based on the effect of strain on flow stress, the constitutive equation was modified. The flow stress was simulated by regression equation, and the results were in good agreement with the experimental results. The processing diagram showed that the suitable thermal deformation parameters were 900—950 ℃ of deformation temperatures and 0.1—1 s^-1 of strain rate. Equiaxed grains with fine grains are obtained at appropriate defor-mation parameters, which were 950 ℃ of temperature and 1 s^-1 of strain rate.

Key words： Cu-Ni-Cr alloy hot compression deformation constitutive equation processing diagram dynamic recrystallization

Published: 25 January 2024 Online: 2024-01-26

CLC number:

TG146.1

Fund:China Postdoctoral Science Foundation(2020T130172, 2020M682288),Henan Postdoctoral Research Program(202002063),Key R & D and Promotion Projects in Henan Province(212102210110),Key Scientific Research Projects of Higher Education Institutions in Henan Province(21A430014),Strategic Consulting Research Project of Henan Institute of China Engineering Development Strategies(2021HENZDA02).

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	Articles by authors
	SUN Wenming
	LI Shaolin
	SONG Kexing
	WANG Qiangsong
	DING Zongye
	ZHU Yingying

Cite this article:

SUN Wenming,LI Shaolin,SONG Kexing, et al. Hot Deformation Behavior and Processing Diagram of As-cast Cu-1.16Ni-0.36Cr Alloy[J]. Materials Reports, 2024, 38(2): 22040205-8.

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https://www.mater-rep.com/EN/10.11896/cldb.22040205 OR https://www.mater-rep.com/EN/Y2024/V38/I2/22040205

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