Al-4.5％Cu合金的过冷及凝固组织特征

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1996, Vol. 17 ›› Issue (1): 51-54.

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UNDERCOOLING AND STRUCTURE OF Al-4.5%Cu Alloy

Jian Zengun, Yang Gencang, zhou Yaohe

The State Key Laboratory of solidification Processing, Northwestern Polytechnical University,Xi'an,710072

Received:1994-06-14 Revised:1994-12-01 Online:1996-02-25 Published:1996-02-25

Abstract

Abstract: The undercooling and structure of the Al-4 5%Cu alloy denucleated by the chloride flux in a fine graphite crucible is studied in this paper. It is found that the viscous flux is of a strong denucleation to the alloy and makes the alloy undercool by up to 62℃ in a metal mold. The influence on the alloys nucleation and strucutre of the thermodynamic undercooling abtained by denculeating is different from that of the dynamic undercooling obtained by quenching in low undercooling. The crystal-size increases with the thermodynamic undercooling in a certain undercooling.

Key words: aluminum alloys, purification, supercoding, str uctures

CLC Number:

Jian Zengun;Yang Gencang;zhou Yaohe. UNDERCOOLING AND STRUCTURE OF Al-4.5%Cu Alloy[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1996, 17(1): 51-54.

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UNDERCOOLING AND STRUCTURE OF Al-4.5%Cu Alloy

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