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Mechanical Properties, Thermal Stability and Microstructures of W-Re-ZrC Alloys Fabricated by Spark Plasma Sintering

文献类型：期刊论文

作者Miao, Shu2; Xie, Zhuoming1; Lin, Yan2; Fang, Qianfeng1; Tan, Jinhong2; Zhao, Yunqiang2
刊名METALS
出版日期2020-02-01
卷号10
关键词tungstenmaterial mechanical alloying solid solution strengthening dispersion strengthening
DOI10.3390/met10020277
通讯作者Miao, Shu(miaosh@gwi.gd.cn) ; Zhao, Yunqiang(zhaoyq@gwi.gd.cn)
英文摘要Tungsten materials, used as friction stir welding tools, undergo severe plastic deformation and even collapse at high operating temperatures. In order to improve the low-temperature toughness and high-temperature strength, W-10wt.%Re-0.5wt.%ZrC alloys were processed by high-energy ball milling and subsequent spark plasma sintering. Single solid-solutionW-Re powders with typical body-centered cubic structures were achieved when the milling time increases to 50 h. The microhardness, tensile properties, thermal stability and microstructures of this sintered W-10wt.%Re-0.5wt.%ZrC alloys were investigated. Synergetic effects of the solute Re and nanosized dispersion particles induce improvements in low-temperature toughness and high-temperature strength. The alloy suffers ductile fracture at 300 degrees C, which is about 400 degrees C and 300 degrees C lower than that of the spark plasma sintered pure W and W-0.5wt.%ZrC, respectively. Besides, this W-10wt.%Re-0.5wt.%ZrC has a high ultimate tensile strength of 818 MPa and uniform elongation of similar to 8.1% at 300 degrees C. Moreover, the microstructures and hardness remain stable even after 1500 degrees C anneal. Based on a detailed microstructure analysis, the mechanisms for the enhanced strength, low-temperature ductility and high thermal stability are proposed and discussed. Grain boundary mobility is impeded by the kinetics constraint through dispersed particles pinning and solute Re atoms dragging, which leads to improved thermal stability. The formation of Zr-C-O particles is most probably attributed to ZrC particles capturing and interacting with impurity oxygen during sintering.
WOS关键词TUNGSTEN ALLOYS ; BEHAVIOR ; RHENIUM
资助项目GDAS' Special Fund Projects of the Construction of the Domestic First-Class Research Organization[2019GDASYL-0103076] ; GDAS' Special Fund Projects of the Construction of the Domestic First-Class Research Organization[2016GDASRC-0203] ; Key Areas Research and Development Program of Guangdong Province[2019B090921003] ; Science and Technology Plan Project of Guangzhou City[201704030038] ; Science and Technology Plan Project of Guangzhou City[201807010068]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000522450800122
出版者MDPI
资助机构GDAS' Special Fund Projects of the Construction of the Domestic First-Class Research Organization ; Key Areas Research and Development Program of Guangdong Province ; Science and Technology Plan Project of Guangzhou City
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103523]  
专题中国科学院合肥物质科学研究院
通讯作者Miao, Shu; Zhao, Yunqiang
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
2.Guangdong Welding Inst, Guangdong Prov Key Lab Adv Welding Technol, China Ukraine EO Paton Inst Welding, Guangzhou 510650, Peoples R China
推荐引用方式
GB/T 7714		 Miao, Shu,Xie, Zhuoming,Lin, Yan,et al. Mechanical Properties, Thermal Stability and Microstructures of W-Re-ZrC Alloys Fabricated by Spark Plasma Sintering[J]. METALS,2020,10.
APA Miao, Shu,Xie, Zhuoming,Lin, Yan,Fang, Qianfeng,Tan, Jinhong,&Zhao, Yunqiang.(2020).Mechanical Properties, Thermal Stability and Microstructures of W-Re-ZrC Alloys Fabricated by Spark Plasma Sintering.METALS,10.
MLA Miao, Shu,et al."Mechanical Properties, Thermal Stability and Microstructures of W-Re-ZrC Alloys Fabricated by Spark Plasma Sintering".METALS 10(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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