Effects of Thermal-Cold Cycling on Dimensional Stability of HIPed Beryllium

doi:10.12442/j.issn.1002-185X.20220918

Home > Archive>Volume 53, Issue 10, 2024 >2718-2722. DOI:10.12442/j.issn.1002-185X.20220918

Effects of Thermal-Cold Cycling on Dimensional Stability of HIPed Beryllium
DOI:
                        10.12442/j.issn.1002-185X.20220918
                    
Author:
                        Ren Penghe1Ren Penghe
School of Materials Science and Engineering, Central South University, Changsha 410083, China
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Xiao Lairong1,2Xiao Lairong
School of Materials Science and Engineering, Central South University, Changsha 410083, China;Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Changsha 410083, China
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Cai Zhenyang1,2Cai Zhenyang
School of Materials Science and Engineering, Central South University, Changsha 410083, China;Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Changsha 410083, China
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Tu Xiaoxuan1Tu Xiaoxuan
School of Materials Science and Engineering, Central South University, Changsha 410083, China
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Zhao Xiaojun1,2Zhao Xiaojun
School of Materials Science and Engineering, Central South University, Changsha 410083, China;Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Changsha 410083, China
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Affiliation:1.School of Materials Science and Engineering, Central South University, Changsha 410083, China;2.Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Changsha 410083, China
Clc Number:TG156.1
Fund Project:National Defense Basic Scientific Research Program of China (JCKY2018203B067); Youth Natural Science Foundation of Hunan Province (2019JJ50817)

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Abstract:

The dimensional change, residual stress, grain orientation difference, dislocation density, and dislocation distribution of beryllium after different hot isostatic pressing treatments were analyzed by laser length meter, Raman spectrometer, nanoindentation meter, electron backscattered diffractometer, and transmission electron microscope, and the influence of thermal-cold cycling treatment on the dimensional stability of beryllium was analyzed. Results show that the size of the hot isostatic pressed beryllium tends to be stable after 6 cycles of thermal-cold cycling treatment from -100 °C to 150 °C, and it has good dimensional stability. The dimensional stabilization mechanism of beryllium is mainly the homogenization of dislocations within the grain and the homogenization of orientation difference caused by micro-plastic deformation.

Key words:beryllium;thermal-cold cycling;microstructure;dimensional stability

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[Ren Penghe, Xiao Lairong, Cai Zhenyang, Tu Xiaoxuan, Zhao Xiaojun. Effects of Thermal-Cold Cycling on Dimensional Stability of HIPed Beryllium[J]. Rare Metal Materials and Engineering,2024,53(10):2718~2722.]
DOI：10.12442/j. issn.1002-185X.20220918

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Received:November 26,2022
Revised:April 20,2023
Adopted:April 26,2023
Online: September 27,2024
Published: September 27,2024

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