高能量速率锻造的纯W的组织与性能研究

doi:10.16568/j.0254-6086.202502008

核工业西南物理研究院 ›› 2025, Vol. 45 ›› Issue (2): 176-182.DOI: 10.16568/j.0254-6086.202502008

高能量速率锻造的纯W的组织与性能研究

石业政¹，王英敏¹，羌建兵¹，魏明玉¹，赵婉彤¹，王子杰¹，赵晨曦¹，任颂家¹，练友运²，封范²，王建豹²，刘翔²

(1. 大连理工大学三束材料改性教育部重点实验室，大连 116024；2. 核工业西南物理研究院，成都 610041)

收稿日期:2023-02-21 修回日期:2024-04-17 出版日期:2025-06-15 发布日期:2025-06-13
作者简介:石业政(1997-)，男，山东济南人，硕士研究生，从事先进钨材料研究。
基金资助:
国家自然科学基金项目(11975092，51671045)；国家磁约束聚变能发展研究专项(2019YFE03120004)；中核集团青年英才项目——菁英项目

Study on microstructure and properties of high energy rate forged pure W

SHI Ye-zheng¹, WANG Ying-min¹, QIANG Jian-bing¹, WEI Ming-yu¹,ZHAO Wan-tong¹, WANG Zi-jie¹, ZHAO Chen-xi¹, REN Song-jia¹,LIAN You-yun², FENG Fan²,WANG Jian-bao², LIU Xiang²

(1. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Ministry of Education, Dalian 116024; 2. Southwestern Institute of Physics, Chengdu 610041)

Received:2023-02-21 Revised:2024-04-17 Online:2025-06-15 Published:2025-06-13

摘要/Abstract

摘要：

纯钨(W)的低温脆性限制了其加工和使用。报道一种高能量速率锻造(HERF)的纯W，该材料兼具低温拉伸塑性与高强度。通过高能球磨制备纯W粉末，采用热压烧结制备烧结块体，随后在1550℃下对烧结坯进行HERF加工，制造了两批样品，其塑性变形量分别为57%和84%。分析测试了HERF-W的微观组织、密度、硬度、力学性能和热冲击性能。经HERF处理后，烧结W致密度由96%升至接近全致密(>99%)，样品晶粒呈薄饼状，沿锻造方向形成强的(111)织构。烧结W和HERF-W样品硬度分别为314 HV和480 HV。HERF-W在150°C时出现11%~14%的拉伸塑变；200℃时抗拉强度>1 GPa，拉伸塑变>12.5%，显著优于工业纯W和部分弥散强化W合金。利用60 kW电子束材料测试平台(EMS-60)在室温下对烧结W和HERF-W进行了瞬态热冲击性能的实验评估，高热负荷加载参数为加速电压120 kV，扫描面积4 mm´4 mm , 脉冲宽度1 ms和100次脉冲循环。烧结W的裂纹阈值为220 MW·m^‒2，而HERF-W(84%)裂纹阈值达到330 MW·m^‒2。

关键词: 纯W, 热压烧结, 高能量速率锻造, 拉伸性能, 抗热冲击性能

Abstract:

The processing and engineering application of pure tungsten (W) have been greatly limited by its low temperature brittleness. A high energy rate forging (HERF) processed pure W is reported, which has improved low temperature ductility and high strength. The pure W powder was made by high-energy ball milling of a commercial powder, and the sintered compacts were prepared by hot-pressing sintering. HERF processing of the sintered compacts was conducted at 1550℃, and two lots of samples are made, which were subjected to 57% and 84% plastic deformation, respectively. The microstructure, relative density, Vickers hardness, tensile property and thermal shock performance of the HERF-W material were investigated. The relative density of the sintered W increased from 96% to near full denseness (>99%) after HERF. The grains in HERF-W became pancake-like, associated with strong (111) texture along the forging direction. The hardnesses of the sintered W and HERT-W are 314 HV and 480 HV respectively. The HERF-W exhibited a plastic strain of 11%~14% in tension at 150℃. At 200℃, the tensile strength and plastic strain were greater than 1.0 GPa and 12.5%, respectively, which are superior to industrial pure W and part dispersion-strengthened W alloys. The transient thermal shock performance of the sintered W and HERF-W was evaluated experimentally under the loading conditions of 120 kV accelerating voltage, 1ms pulse duration and 100 pulse cycles within a 4 mm´4 mm area at room temperature on the 60 kW electron beam material testing platform (EMS-60). The crack thresholds of the sintered W and HERF-W (84%) were measured to be 220 MW·m^‒2 and 330 MW·m^‒2 respectively.

Key words: Pure W, Hot pressing sintering, High energy rate forging, Tensile properties, Thermal shock resistance

中图分类号:

TL62⁺7

石业政, 王英敏, 羌建兵, 魏明玉, 赵婉彤, 王子杰, 赵晨曦, 任颂家, 练友运, 封范, 王建豹, 刘翔. 高能量速率锻造的纯W的组织与性能研究[J]. 核工业西南物理研究院, 2025, 45(2): 176-182.

SHI Ye-zheng, WANG Ying-min, QIANG Jian-bing, WEI Ming-yu, ZHAO Wan-tong, WANG Zi-jie, ZHAO Chen-xi, REN Song-jia, LIAN You-yun, FENG Fan, WANG Jian-bao, LIU Xiang. Study on microstructure and properties of high energy rate forged pure W[J]. Nuclear Fusion and Plasma Physics, 2025, 45(2): 176-182.

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高能量速率锻造的纯W的组织与性能研究

Study on microstructure and properties of high energy rate forged pure W

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