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冷熱循環(huán)處理對(duì)熱等靜壓鈹材尺寸穩(wěn)定性的影響
作者:
作者單位:

1.中南大學(xué) 材料科學(xué)與工程學(xué)院，湖南 長(zhǎng)沙 410083;2.有色金屬材料科學(xué)與工程教育部重點(diǎn)實(shí)驗(yàn)室，湖南 長(zhǎng)沙 410083

作者簡(jiǎn)介:

通訊作者:

中圖分類(lèi)號(hào):

TG156.1

基金項(xiàng)目:

國(guó)家國(guó)防基礎(chǔ)科學(xué)研究計(jì)劃（JCKY2018203B067）；湖南省青年自然科學(xué)基金（2019JJ50817）


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

Fund Project:

National Defense Basic Scientific Research Program of China (JCKY2018203B067); Youth Natural Science Foundation of Hunan Province (2019JJ50817)

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    摘要:

    利用激光測(cè)長(zhǎng)儀、拉曼光譜儀、納米壓痕儀、背散射衍射電鏡以及透射電鏡分析不同處理狀態(tài)等靜壓鈹材的尺寸變化、殘余應(yīng)力、晶粒取向差、位錯(cuò)密度及位錯(cuò)分布形態(tài)，分析冷熱循環(huán)處理對(duì)鈹材尺寸穩(wěn)定性的影響。結(jié)果表明，熱等靜壓鈹材在-100~150 ℃冷熱循環(huán)6次后尺寸趨于穩(wěn)定，具有良好的尺寸穩(wěn)定性。冷熱循環(huán)處理過(guò)程中鈹材尺寸穩(wěn)定化機(jī)制主要是晶粒內(nèi)位錯(cuò)均勻化及微塑性變形導(dǎo)致取向差均勻化。

    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.

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引用本文

任鵬禾,肖來(lái)榮,蔡圳陽(yáng),涂曉萱,趙小軍.冷熱循環(huán)處理對(duì)熱等靜壓鈹材尺寸穩(wěn)定性的影響[J].稀有金屬材料與工程,2024,53(10):2718~2722.[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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  • 收稿日期:2022-11-26
  • 最后修改日期:2023-04-20
  • 錄用日期:2023-04-26
  • 在線發(fā)布日期: 2024-09-27
  • 出版日期: 2024-09-27