Glass forming ability of Fe_(60)Co_xZr_(10) Mo_5 W_2B_(23-x)(x=1,3,5,7,9) bulk metallic glasses  

作　　者：刘东艳[1] 胡壮麒[1] 

机构地区：[1]中科院金属研究所

出　　处：《材料与冶金学报》2005年第2期111-114,119,共5页Journal of Materials and Metallurgy

基　　金：国家重点基础研究发展规划(No.67201);国家自然科学基金(No.50274064);钢铁联合研究基金(No.50471077).

摘　　要：The bulk Fe<sup>60 CoxZr<sup>10 Mo5W2B<sup>23-x （x=1, 3, 5, 7, 9） amorphous rods with diameters of 1.5 mm were successfully prepared by copper mold casting method with the low purity raw materials. The amorphous and crystalline states, and thermal parameters, such as the glass transition temperature （Tg）, the initial crystallization temperature （Tx）, the supercooled liquid region （ΔTx=Tx-Tg）, the reduced glass transition temperature T<sup>rg （Tg/Tm, Tm: the onset temperature of melting of the alloy, and Tg/Tl, Tl: the finished temperature of melting of the alloy） were investigated by X-ray diffractometry （XRD） and differential scanning calorimetry （DSC） analysis. Glass forming ability of Fe<sup>60 CoxZr<sup>10 Mo5W2B<sup>23-x （x=1,3,5,7,9） bulk metallic glasses has been studied. According to the results, the alloy （x=7） with the highest T<sup>rg （Tg/Tl=0.607, Tg/Tl=0.590） value, has the strongest glass forming ability among these alloys because its composition is near eutectic composition. The wide supercooled liquid region over 72 K indicates the high thermal stability for this alloy system. This bulk metallic glass exhibits quite high strength （Hv 1020）. The success of production of the Fe-based bulk metallic glass with industrial materials is of great significance for the future progress of basic research and practical application.

关 键 词：非晶形成能力 块状金属玻璃 耐热性 Fe6oCoxZr10Mo5W2B23-x 

分 类 号：TG139.8[一般工业技术—材料科学与工程]