典型文献
Pressureless two-step sintering of ultrafine-grained refractory metals:Tungsten-rhenium and molybdenum
文献摘要：
The challenge of sintering ultrafine-grained refractory metals and alloys to full density is hereby ad-dressed by pressureless two-step sintering in tungsten-rhenium alloy and pure molybdenum.Using prop-erly processed nano powders(～50 nm average particle size),we are able to sinter W-10Re alloy to 98.4％density below 1200℃while maintaining a fine grain size of 260 nm,and sinter molybdenum to 98.3％density below 1120℃while maintaining a fine grain size of 290 nm.Compared to normal sintering,two-step sintering offers record-fine grain sizes and better microstructural uniformity,which translates to better mechanical properties with higher hardness(6.3 GPa for tungsten-rhenium and 4.0 GPa for molyb-denum,both being the highest in all pressurelessly sintered samples of the respective material system)and larger Weibull modulus.Together with our previous demonstration in tungsten,we believe that two-step sintering is a general effective method to produce high-quality fine-grained refractory metals and alloys,and the lessons learned here are transferable to other materials for powder metallurgy.
文献关键词：
中图分类号：
作者姓名：
Zhongyou Que;Zichen Wei;Xingyu Li;Lin Zhang;Yanhao Dong;Mingli Qin;Junjun Yang;Xuanhui Qu;Ju Li
作者机构：
Beijing Advanced Innovation Center for Materials Genome Engineering,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China;Department of Nuclear Science and Engineering,Massachusetts Institute of Technology,Cambridge,MA 02139,USA;Department of Materials Science and Engineering,Massachusetts Institute of Technology,Cambridge,MA 02139,USA
文献出处：
引用格式：
[1]Zhongyou Que;Zichen Wei;Xingyu Li;Lin Zhang;Yanhao Dong;Mingli Qin;Junjun Yang;Xuanhui Qu;Ju Li-.Pressureless two-step sintering of ultrafine-grained refractory metals:Tungsten-rhenium and molybdenum)[J].材料科学技术（英文版）,2022(31):203-214
A类：
Pressureless,erly,10Re,molyb,denum,pressurelessly
B类：
two,step,sintering,ultrafine,grained,refractory,metals,Tungsten,rhenium,molybdenum,challenge,alloys,full,density,is,hereby,ad,dressed,tungsten,pure,Using,processed,nano,powders,average,particle,we,below,while,maintaining,Compared,normal,offers,record,sizes,better,microstructural,uniformity,which,translates,mechanical,properties,higher,hardness,GPa,both,being,highest,sintered,samples,respective,system,larger,Weibull,modulus,Together,our,previous,demonstration,believe,that,general,effective,method,produce,quality,lessons,learned,transferable,other,materials,metallurgy
AB值：
0.453712
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