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A study of the formation and penetration of the molten copper-rich phase in iron with the addition of nickel and tin

✍ Scribed by Y. Zou; E.W. Langer

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
774 KB
Volume
110
Category
Article
ISSN
0921-5093

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✦ Synopsis

An investigation of the formation and penetration of the molten copper-rich phase in iron was carried out by means of" diffusion experiments on prefabricated copper-alloy-iron couples at elevated temperatures. The molten copper-rich phase appeared to form preferably at the junctions of three grains and to penetrate along grain boundaries. Addition of tirt or nickel to the copper alloy affected the formation and penetration of the molten copper-rich phase by decreasing or increasing the solubifity of copper in austenite and the melting point of the copper-rich phase. It was observed that tin concentrated in the molten copper-rich phase, while nickel preferably concentrated on the iron side of the molten copper-rich-phase-iron interface. It was found that nickel had only a limited effect on inhibiting the formation and penetration of the molten copperrich phase in austenite when tin was present.

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