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Formation and Mechanical Properties of Zr-Nb-Cu-Ni-Al-Lu Bulk Glassy Alloys with Superior Glass-Forming Ability
【文件类型】 【消费金额】1.5 【文章页数】5 【会员操作】  
【文章作者】赵相金;LIU Wei;LIU Li;ZHANG Tao;PANG Shujie;MA Chaoli;
【文章摘要】      Glass-forming ability(GFA) and mechanical properties of(Zr_(0.58)Nb_(0.03)Cu_(0.16)Ni_(0.13)Al_(0.10))_(100-x)Lu_x(x= 0-3 at%) alloys have been investigated.The GFA of Zr_(58)Nb_3Cu_(16)Ni_(13)Al_(10) alloy is dramatically enhanced by adding Lu.The(Zr_(0.58)Nb_(0.03)Cu_(0.16)Ni_(0.13)Al_(0.10))_(98)Lu_2 alloy possesses the highest GFA in the studied Zr-Nb-Cu-Ni-Al-Lu alloys,with its critical diameter for glass formation reaching 20 mm by copper-mould casting method,while that of the Lu-free Zr_(58)Nb_3Cu_(16)Ni_(13)Al_(10) alloy is 7 mm.The critical diameters of(Zr_(0.58)Nb_(0.03)Cu_(0.16)Ni_(0.13)Al_(0.10))_(100-x)Lu_x(x =1 at%and 3 at%) alloys are 15 mm and 12 mm,respectively.The Lu addition to Zr_(58)Nb_3Cu_(16)Ni_(13)Al_(10) alloy induces the change of initial crystallization phases from face-centred-cubic Zr_2Ni and tetragonal Zr_2Ni phases for the Lu-free Zr_(58)Nb_3Cu_(16)Ni_(13)Al_(10) alloy to an icosahedral quasi-crystalline phase for the Lu-doped alloys,which may be the origin for the enhanced GFA of the Lu-doped alloys.The compressive fracture strength and plastic strain of the bulk glassy(Zr_(0.58)Nb_(0.03)Cu_(0.16)Ni_(0.13)Al_(0.10))_(98)Lu_2 alloy are1 610 MPa and 1.5%,respectively.
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【期刊】【卷】【ISSUE】【ISSUEID】    【文章期份】2016    【发布日期】2016/3/15 0:00:00    点击率:1    打印    关闭
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