2·s-1和4.458×10-8 Ω·m，較相同工藝常壓時(shí)效處理后的硬度和熱擴(kuò)散系數(shù)分別增加了17.56%和10.74%，而電阻率卻降低了4.85%。因此，高壓時(shí)效處理是提高Cu-51.15W-0.24Cr合金力學(xué)性能、降低電阻率的有效途徑。"/>

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高壓時(shí)效處理對(duì)Cu-51.15W-0.24Cr合金組織和性能的影響
作者:
作者單位:

1.中北大學(xué) 材料科學(xué)與工程學(xué)院，山西 太原 030051;2.北京有色金屬研究總院 有研粉末新材料(北京)有限公司，北京 100088;3.軍事科學(xué)院 國(guó)防科技創(chuàng)新研究院，北京 100071;4.燕山大學(xué) 材料科學(xué)與工程學(xué)院 亞穩(wěn)材料制備技術(shù)與科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室，河北 秦皇島 066004

作者簡(jiǎn)介:

Zhao Yuhong, Ph. D., Professor, School of Materials Science and Engineering, North University of China, Taiyuan 030051, P. R. China, Tel: 0086-351-3557006, E-mail: zhaoyuhong@nuc.edu.cn

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

山西省科技重大專項(xiàng)（No. 20181101002）山西省青年自然科學(xué)基金（No.201801D221145，201801D221150，201801D221153），山西省高等學(xué)?？萍紕?chuàng)新項(xiàng)目（2019L0514、2019L0526），國(guó)家自然科學(xué)基金（(Nos. 51801189, 51804279) 。


Effect of High-Pressure Aging Treatment on Microstructure and Properties of Cu-51.15W-0.24Cr Alloy
Author:
Affiliation:

1.School of Materials Science and Engineering, North University of China, Taiyuan 030051, China;2.GRIPM Advanced Materials Co., Ltd, General Research Institute for Nonferrous Metals, Beijing 100088, China;3.National Innovation Institute of Defense Technology, Academy of Military Science PLA China, Beijing 100071, China;4.Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China

Fund Project:

National Natural Science Foundation of China (51801189, 51804279); Shanxi Province Science Foundation for Youths (201801D221145, 201801D221150, 201801D221153); Major Science and Technology Projects of Shanxi Province (20181101002); Science and Technology Innovation Project of Colleges and Universities in Shanxi Province (2019L0514, 2019L0526)

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    摘要:

    針對(duì)Cu-W合金的強(qiáng)度和導(dǎo)熱導(dǎo)電性偏低問(wèn)題，對(duì)Cu48.61W51.15Cr0.24合金進(jìn)行了高壓時(shí)效處理，并對(duì)比了高壓時(shí)效處理和常壓時(shí)效處理后合金的微觀組織，硬度，熱導(dǎo)率以及導(dǎo)電率。結(jié)果表明：高壓時(shí)效處理能增大Cu48.61W51.15Cr0.24合金的致密度，使組織中析出的Cr相更加彌散細(xì)小，改善合金的硬度及導(dǎo)熱導(dǎo)電性能。該合金經(jīng)960 ℃/1 h固溶后，再在3 GPa壓力下500 ℃時(shí)效1 h處理可獲得較高的硬度、熱擴(kuò)散系數(shù)及較低的電阻率，其值分別為1540 MPa、0.5236 cm2·s-1和4.458×10-8 Ω·m，較相同工藝常壓時(shí)效處理后的硬度和熱擴(kuò)散系數(shù)分別增加了17.56%和10.74%，而電阻率卻降低了4.85%。因此，高壓時(shí)效處理是提高Cu-51.15W-0.24Cr合金力學(xué)性能、降低電阻率的有效途徑。

    Abstract:

    Aiming at solving the problem of poor strength, low conductivity and thermal conductivity of Cu-W alloys, high pressure aging treatment was conducted to reinforce Cu-51.15W-0.24Cr alloy. The microstructure, hardness, thermal conductivity and conductivity of the alloy after high pressure aging treatment and normal pressure aging treatment were compared. The results show that high pressure aging treatment can increase the compactness of Cu48.61W51.15Cr0.24 alloy, eventually resulting in more dispersed distribution and finer grain size of Cr phase during the aging treatment, and improving the hardness and thermal conductivity of the alloy. After solution treatment at 960 °C for 1 h and aging at 500 °C for 1 h under a pressure of 3 GPa, the hardness, thermal diffusivity and resistivity are determined to be 1540 MPa, 0.5236 cm2·s-1 and 4.458×10-8 Ω·m, respectively, which are 17.56% and 10.74% higher than and 4.85% lower than those of alloy under normal pressure, respectively. Therefore, high pressure aging treatment can be an effective way to improve mechanical properties and to reduce resistivity of Cu-51.15W-0.24Cr alloy.

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顧濤,張帥鑫,趙宇宏,付東興,張志彬,劉建華,侯華.高壓時(shí)效處理對(duì)Cu-51.15W-0.24Cr合金組織和性能的影響[J].稀有金屬材料與工程,2021,50(12):4224~4229.[Gu Tao, Zhang Shuaixin, Zhao Yuhong, Fu Dongxing, Zhang Zhibin, Liu Jianhua, Hou Hua. Effect of High-Pressure Aging Treatment on Microstructure and Properties of Cu-51.15W-0.24Cr Alloy[J]. Rare Metal Materials and Engineering,2021,50(12):4224~4229.]
DOI：10.12442/j. issn.1002-185X. E20200051

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  • 收稿日期:2020-10-13
  • 最后修改日期:2020-11-20
  • 錄用日期:2020-12-22
  • 在線發(fā)布日期: 2021-12-30
  • 出版日期: 2021-12-24