Synthesis of Cu_(47)Ti_(34)Zr_(11)Ni_8 bulk metallic glass by warm extrusion of gas atomized powders

D.J. Sordelet; E. Rozhkova; P. Huang

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Synthesis of Cu_(47)Ti_(34)Zr_(11)Ni_8 bulk metallic glass by warm extrusion of gas atomized powders

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Cu_(47)Ti_(34)Zr_(11)Ni_8 amorphous gas atomized powders were consolidated by warm extrusion. After consolidation near 723 K using an extrusion ratio of 5, the material retains between 88 percent and 98 percent of the amorphous structure found in the gas atomized powder. The onsets of the glass transition and crystallization temperatures of this extruded material are observed respectively at slightly higher and lower temperatures than those of the starting powders. These temperature shifts are attributed to a composition change in the remaining amorphous phase during partial devitrification throughout the extrusion process. Powders extruded at the same temperature, but using higher extrusion ratios of 9 and 13, exhibit substantial devitrification during the consolidation process yet still deform homogeneously.

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《Journal of Materials Research》 |2002年第1期|186-198|共13页
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D.J. Sordelet; E. Rozhkova; P. Huang;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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正文语种英语
中图分类工程材料学;
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Synthesis of Cu_(47)Ti_(34)Zr_(11)Ni_8 bulk metallic glass by warm extrusion of gas atomized powders

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