FeCoNiMnB_x高熵合金微观组织及力学性能的研究
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摘要
采用真空电弧熔炼技术熔炼了FeCoNiMnB_x(x=0,0.0 5,0.1,0.15,0.20)高熵合金,然后对合金的微观组织及其力学性能进行测试。结果表明,未加入B元素时,合金组织具有单一FCC结构。当B含量≥0.05at%时,组织由基体FCC相+B_2Co_3组成;当B含量从0.05at%增加到0.20at%时,该合金的硬度逐渐增加,B含量为0.20at%时,该合金的硬度达到最大,为274 HV。
FeCoNiMnB_x(x=0,0.0 5,0.1,0.15,0.20) high-entropy alloy was prepared by vacuum arc melting furnace, and the microstructure and mechanical properties of the alloy were tested. The results show that when B element is not added, the alloy structure has a single FCC structure. When B content is more than 0.05 at%, the structure is composed of FCC matrix phase+B_2Co_3. With the increase of B content(from 0.05 at% to 0.20 at%), the microhardness of the alloy increases gradually.When the boron content is 0.20 at%, the microhardness of the alloy reaches the maximum of 274 HV.
FeCoNiMnB_x(x=0,0.0 5,0.1,0.15,0.20) high-entropy alloy was prepared by vacuum arc melting furnace, and the microstructure and mechanical properties of the alloy were tested. The results show that when B element is not added, the alloy structure has a single FCC structure. When B content is more than 0.05 at%, the structure is composed of FCC matrix phase+B_2Co_3. With the increase of B content(from 0.05 at% to 0.20 at%), the microhardness of the alloy increases gradually.When the boron content is 0.20 at%, the microhardness of the alloy reaches the maximum of 274 HV.
引文
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[2]Liu W Y,Zhang H F,Wang A M,et al.New criteria of glass forming ability,thermal stability and characteristic temperatures for various bulk metallic glass systems[J].Materials Science&Engineering A,2007,459(1/2):196-203.
[3]Yeh J W,Chen S K,Lin S J,et al.Nanostructured high-entropy alloys with multipe principal elements:novel alloy design concepts and outcomes[J].Advanced Engineering Materials,2004,6(5):299-303.
[4]Shun T T,Du Y C.Age hardening of the Al0.3CoCrFeNiC0.1high entropy alloy[J].Journal of Alloys and Compounds,2009,478(1/2):269-272.
[5]Wang F J,Zhang Y.Effect of Co addition on crystal structure and mechanical properties of Ti0.5Cr Fe NiAlCo high entropy alloy[J].Materials Science&Engineering A,2008,496(1):214-216
[6]Tung C C,Yeh J W,Shun T T,et al.On the elemental effect of AlCoCrCuFeNi high-entropy alloy system[J].Materials Letters,2007,61(1):1-5.
[7]邱星武,张云鹏.高熵合金的特点及研究现状[J].稀有金属与硬质合金,2012,40(1):44-47.
[8]张晖,潘冶,何宜柱.激光熔Fe Co NiCrAl12Si高熵合金涂层[J].金属学报,2011(8):1075-1079.
[9]高家诚,李锐.高熵合金研究的新进展[J].功能材料,2008,39(7):1059-1061.
[10]刘源,陈敏,李言祥,等.AlxCo Cr CuFeNi多主元高熵合金的微观结构和力学性能[J].稀有金属材料与工程,2009,38(9):1602-1607.
[11]李安敏,张喜燕.AlCrCuFeNi高熵合金的组织与硬度研究[J].广西大学学报自然科学版,2008,33(2):189-192.
[12]陈国进,张冲,唐群华.含B量对激光熔覆Fe Co Cr NiBx(x=0.5,0.75,1.0,1.25)高熵合金涂层组织结构与耐磨性的影响[J].稀有金属材料与工程,2015,44(6):1418-1422.