Investigation on the relationship between intermediate temperature embrittlement and intergranular precipitate in Ni(Bi) alloy

Autor:	Reda Chellali, Ralf Schlesiger, Lei Zheng, Guido Schmitz, Dietmar Baither
Rok vydání:	2012
Předmět:	Superalloy Materials science Alloy Metallurgy engineering Tensile ductility Intermediate temperature Grain boundary engineering.material Intergranular corrosion Microstructure Embrittlement
Zdroj:	Materials & Design. 34:155-158
ISSN:	0261-3069
DOI:	10.1016/j.matdes.2011.07.050
Popis:	Ni and Ni-based superalloys generally exhibit intermediate temperature embrittlement (ITE), which is usually interpreted by the evolution of intergranular precipitates. In this paper, the relationship between ITE and intergranular precipitates was investigated in a binary Ni(Bi) alloy. The tensile ductility of Ni(Bi) alloy shows evident ITE with a maximum between 700 °C and 750 °C. The microstructure of the sample heat treated at 750 °C was observed to be free of precipitates within grains and at grain boundaries. The interpretation of intergranular precipitates for ITE was then discussed and proven to be invalid.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca57e07979163157956dde2cca0ca155 https://doi.org/10.1016/j.matdes.2011.07.050 Zobrazit plný text záznamu Full Text from ScienceDirect