Amorphous-crystalline transition layers formation during quenching of Fe_(61)Co_7Zr_(10)Mo_5W_2B_(15) melt

Amorphous-crystalline transition layers formation during quenching of Fe_(61)Co_7Zr_(10)Mo_5W_2B_(15) melt

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摘要 New Fe-based multicomponent amorphous alloys have been developed recently based on empirical rules for large glass forming ability(GFA). In the present investigation, the master alloy ingot with the nominal composition of Fe 61Co 7Zr 10Mo 5W 2B 15(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 2.5 mm Fe-based rods were manufactured by injection technique. Characterization of the ingots and the parameters associated with the thermal stability were carried out by X-ray diffractometry(XRD) and high temperature differential scanning calorimeter(DSC), respectively. The interval of the supercooled liquid region is 39 K for the Fe-based alloy. The GFA of Fe-based alloys is relatively lower, to the buttons obtained are all crystallized. The Fe-based rod exhibites a high Vickers hardness up to HV 1 329. In addition, an amorphous-crystalline transition layers are observed in the rod. This transition zone is caused by unhomogeneous temperature distribution and relatively lower GFA for Fe-based alloys. New Fe-based multicomponent amorphous alloys have been developed recently based on empirical rules for large glass forming ability(GFA). In the present investigation, the master alloy ingot with the nominal composition of Fe 61Co 7Zr 10Mo 5W 2B 15(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 2.5 mm Fe-based rods were manufactured by injection technique. Characterization of the ingots and the parameters associated with the thermal stability were carried out by X-ray diffractometry(XRD) and high temperature differential scanning calorimeter(DSC), respectively. The interval of the supercooled liquid region is 39 K for the Fe-based alloy. The GFA of Fe-based alloys is relatively lower, to the buttons obtained are all crystallized. The Fe-based rod exhibites a high Vickers hardness up to HV 1 329. In addition, an amorphous-crystalline transition layers are observed in the rod. This transition zone is caused by unhomogeneous temperature distribution and relatively lower GFA for Fe-based alloys.

作者高玉来孙剑飞沈军王刚 M I Petrzhik 周彼德

机构地区 School of Materials Science and Engineering A.A. Baikov Institute of Metallurgy and Materials Science

出处《中国有色金属学会会刊：英文版》 CSCD 2003年第1期10-13,共4页 Transactions of Nonferrous Metals Society of China

关键词铁基合金玻璃态合金金属玻璃玻璃成形性能淬火结晶化 bulk amorphous alloy metallic glass GFA(glass forming ability) quenching crystallization

分类号 TG146.4 [金属学及工艺—金属材料]

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中国有色金属学会会刊：英文版

2003年第1期

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Amorphous-crystalline transition layers formation during quenching of Fe_(61)Co_7Zr_(10)Mo_5W_2B_(15) melt

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