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Synthesis of bulk nanocrystalline Ti–Cu alloy by pressure-quenching method

Published online by Cambridge University Press:  31 January 2011

Dongjian Li ,
Aiming Wang ,
Bing Yao ,
Bingzhe Ding  and
Zhuangqi Hu
Dongjian Li
Affiliation:
National Key Lab for RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People's Republic of China
Aiming Wang
Affiliation:
National Key Lab for RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People's Republic of China
Bing Yao
Affiliation:
National Key Lab for RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People's Republic of China
Bingzhe Ding
Affiliation:
National Key Lab for RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People's Republic of China
Zhuangqi Hu
Affiliation:
National Key Lab for RSA, Institute of Metal Research, Academia Sinica, Shenyang, 110015, People's Republic of China
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Abstract

A new method is proposed to prepare bulk nanocrystalline alloys by quenching alloy melts under high pressure. Due to application of pressure to solidification processes, the nucleation rate is increased whereas the growth rate of nuclei decreased with increase of pressure, which makes it possible to obtain bulk ingots with nanometer-sized crystalline grains if appropriate pressure, temperature, and cooling rate are selected. The as-pressure-quenched products are cylinder-like with diameter about 4 mm and height several millimeters. This method can produce dense, free-porosity bulk nanocrystalline alloys with clean crystalline interfaces, promising use for experimental research and technological applications.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 11 , November 1996 , pp. 2685 - 2688
Copyright
Copyright © Materials Research Society 1996

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References

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