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Research on the Microstructure and Properties of the As-cast Cr_xNbTiZr High Entropy Alloys AITranslate

XU Jin-liang; WANG Tao; ZHANG Shan-nan; WEI Wen-chao; WANG Chun-yu
College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

The CrxNbTiZr high entropy alloys of mixed strengthening effects were designed according to the phase formation criterion.The effect of chromium on the microstructure and mechanical properties of the CrxNbTiZr high entropy alloys was researched by X-ray diffractometer,scanning electron microscope and universal mechanical testing machine.The results show that the CrxNbTiZr high entropy alloys are composed of BCC phase and some Cr2M(M=Nb,Ti,Zr) Laves-phase intermetallic compounds.The alloys present typical dendritic morphology,in which the second phase discontinuously precipitates.By the solid solution strengthening of Cr and the second phase strengthening of Laves phase,the Cr1.0 alloy possesses the yield strength up to 1 401 MPa,the compressive strength up to 1 677 MPa and the fracture strain down to 13.30%.The fracture morphology analysis shows that the series of alloys have the mixed fracture cha-racteristics of ductility and brittleness.

KeyWords AITranslate

CrNbTiZr high entropy alloy phase formation criterion microstructure mechanical property

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Basic Information:

DOI：

Chinese Library Classification Number:TG113[金属学及工艺—物理冶金]

Citation Information:

The CrxNbTiZr high entropy alloys of mixed strengthening effects were designed according to the phase formation criterion.The effect of chromium on the microstructure and mechanical properties of the CrxNbTiZr high entropy alloys was researched by X-ray diffractometer,scanning electron microscope and universal mechanical testing machine.The results show that the CrxNbTiZr high entropy alloys are composed of BCC phase and some Cr2M(M=Nb,Ti,Zr) Laves-phase intermetallic compounds.The alloys present typical dendritic morphology,in which the second phase discontinuously precipitates.By the solid solution strengthening of Cr and the second phase strengthening of Laves phase,the Cr1.0 alloy possesses the yield strength up to 1 401 MPa,the compressive strength up to 1 677 MPa and the fracture strain down to 13.30%.The fracture morphology analysis shows that the series of alloys have the mixed fracture cha-racteristics of ductility and brittleness.

quote

GB/T 7714-2015 [1] XU Jin-liang, WANG Tao, ZHANG Shan-nan, et al. Research on the Microstructure and Properties of the As-cast Cr_xNbTiZr High Entropy Alloys[J]. Rare Metals and Cemented Carbides, 2020(4): 53-58.
MLA [1] XU Jin-liang, et al., "Research on the Microstructure and Properties of the As-cast Cr_xNbTiZr High Entropy Alloys." Rare Metals and Cemented Carbides, no. 4, 2020, pp. 53-58.
APA [1] XU Jin-liang, WANG Tao, ZHANG Shan-nan, WEI Wen-chao, & WANG Chun-yu. (2020). Research on the Microstructure and Properties of the As-cast Cr_xNbTiZr High Entropy Alloys. Rare Metals and Cemented Carbides(4), 53-58.
IEEE [1] XU Jin-liang, WANG Tao, ZHANG Shan-nan, WEI Wen-chao, and WANG Chun-yu, "Research on the Microstructure and Properties of the As-cast Cr_xNbTiZr High Entropy Alloys," Rare Metals and Cemented Carbides, no. 4, pp. 53-58, 2020. keywords: {CrNbTiZr;high entropy alloy;phase formation criterion;microstructure;mechanical property}