【摘 要】
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New Fe-based multicomponent amorphous alloys have been developed recently based on empirical rulesfor large glass forming ability(GFA). In the present investiga
【机 构】
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School of Materials Science and Engineering,A.A.Baikov Institute of Metallurgy and Materials Science
论文部分内容阅读
New Fe-based multicomponent amorphous alloys have been developed recently based on empirical rulesfor large glass forming ability(GFA). In the present investigation, the master alloy ingot with the nominal composi-tion of Fe61 Co7 Zr10 Mo5 W2 B15 (mole fraction, %) was prepared by arc-melting under Ti-gettered Ar atmosphere.The Fe-based buttons with different transverse cross sections were fabricated by arc-melting method, and the d 2.5mm Fe-based rods were manufactured by injection technique. Characterization of the ingots and the parameters asso-ciated with the thermal stability were carried out by X-ray diffractometry(XRD) and high temperature differential scan-ning calorimeter(DSC), respectively. The interval of the supercooled liquid region is 39 K for the Fe-based alloy. The GFAof Fe-based alloys is relatively lower, to the buttons obtained are all crystallized. The Fe-based rod exhibites a high Vickershardness up to HV 1 329. In addition, an amorphous-crystalline transition layers are observed in the rod. This transitionzone is caused by unhomogeneous temperature distribution and relatively lower GFA for Fe-based alloys.
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