RAPID SOLIDIFICATION WELDING OF ULTRA--THIN Zr55Cu50Al12Ni3 AMORPHOUS FOILS

Acta Metall Sin

2009, Vol. 45

Issue (3): 374-377 DOI:

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RAPID SOLIDIFICATION WELDING OF ULTRA--THIN Zr₅₅Cu₅₀Al₁₂Ni₃ AMORPHOUS FOILS

ZHAI Qiuya; XU Jinfeng; ZHANG Xing; YANG Jinshan; GUO Xuefeng

School of Materials Science and Engineering; Xi'an University of Technology; Xi'an 710048

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ZHAI Qiuya XU Jinfeng ZHANG Xing YANG Jinshan GUO Xuefeng. RAPID SOLIDIFICATION WELDING OF ULTRA--THIN Zr₅₅Cu₅₀Al₁₂Ni₃ AMORPHOUS FOILS. Acta Metall Sin, 2009, 45(3): 374-377.

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Abstract

The rapid solidification welding of Zr₅₅Cu₃₀Al₁₂Ni₃ amorphous foils with the thickness of 25---35 μm was conducted using a micro--type capacitor discharge welder. XRD analysis shows that the joint presents still amorphous structure under the rapid solidification welding conditions. The joint cooling rate calculated is high up to 10⁶ K/s, which is much higher than that of critical cooling rate of amorphous Zr base alloy, and effectively suppresses the crystallization of joint zone. The micro joints with the size of 60---90 μm in diameter are produced and there are no welding defects such as porosity and inclusions within the joints. The joint shear strength is up to 1141 MPa. Contributing to higher electrical resistivity, the welding energy for welding metal glass foils is lower than that of crystallized metal foils remarkably.

Key words: Zr base amorphous alloy ultra--thin foil rapid solidification welding mechanical property of joint

Received: 18 August 2008

ZTFLH:

TG139.8

Fund:

Supported by Natural Science Foundation of Shaanxi Province (Nos.2006E₁34 and 2006E₁20) and Natural Science Foundation of Shaanxi Educational Committee (No.06JK220)

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2009/V45/I3/374

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