Oxygen addition for improving the strength and plasticity of TiZr-based amorphous alloy composites
Zhao, Ziyan1; Mu, Juan1; Zhang, Haifeng2; Wang, Yandong1; Ren, Yang3
Corresponding AuthorMu, Juan( ; Wang, Yandong(
AbstractThe addition of a small amount of oxygen improves the mechanical properties, especially plasticity, of Ti45.7Zr33Ni3Cu5.8Be12.5 amorphous alloy composites (AACs) at room temperature (298 K). Compared to the plasticity of AACs without added O (5%), the plasticity of the composites with 0.73 at.% O (nominal composition) was much higher (11 %). Even at O content higher than 0.73 at.%, the AACs exhibited good plasticity. The highest plasticity of similar to 12.3 % was observed with 2.87 at.% O. Two distinct mechanisms are proposed to explain the enhanced plasticity of the AACs. At low O content, although deformationinduced phase transformation was suppressed, a substantial amount of alpha '' martensite was formed. The microstructural features of alpha '' martensite, such as thinner laths and homogeneous distribution, induced the formation of multiple shear bands in the amorphous matrix. At high O content, deformation-induced phase transformation was seriously suppressed. A dispersed nano omega phase was formed during rapid solidification in AACs with O content higher than 1.45 at.%. This resulted in a weakening in the anisotropy of beta dendrites and led to their homogenous deformation. Furthermore, multiple shear bands were formed in the amorphous matrix. Apart from plasticity, the strength of the AACs also increased with an increase in the O content. This phenomenon was explained in terms of three mechanisms, viz. the solid-solutionstrengthening effect of O, fine-grain strengthening of beta dendrites, and secondary phase strengthening by the nano omega phase. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordAmorphous alloy Composite Oxygen Martensitic phase transformation Omega phase
Funding OrganizationNational Natural Science Foundation of China
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[51771049] ; National Natural Science Foundation of China[51790484]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000654379000023
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorMu, Juan; Wang, Yandong
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat MOE, Shenyang 110004, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA
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GB/T 7714
Zhao, Ziyan,Mu, Juan,Zhang, Haifeng,et al. Oxygen addition for improving the strength and plasticity of TiZr-based amorphous alloy composites[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,79:212-221.
APA Zhao, Ziyan,Mu, Juan,Zhang, Haifeng,Wang, Yandong,&Ren, Yang.(2021).Oxygen addition for improving the strength and plasticity of TiZr-based amorphous alloy composites.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,79,212-221.
MLA Zhao, Ziyan,et al."Oxygen addition for improving the strength and plasticity of TiZr-based amorphous alloy composites".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 79(2021):212-221.
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