Intermetallic/Metallic Polyphase In-Situ Composites

Autor:	B.F. Oliver, R.D. Noebe, S. M. Joslin, J. D. Whittenberger, David R. Johnson
Rok vydání:	1992
Předmět:	Nial Toughness Materials science Creep Phase (matter) Composite number Intermetallic Composite material computer computer.programming_language Directional solidification Eutectic system
Zdroj:	MRS Proceedings. 273
ISSN:	1946-4274 0272-9172
DOI:	10.1557/proc-273-87
Popis:	To evaluate various in-situ reinforcement schemes, a computer controlled containerless directional solidification system has been used to produce NiAl-based polyphase composites containing up to two intermetallic phases and at least one ductile phase. Systems evaluated include Ni-Al-Cr, Ni-Al-Mo, Ni-Al-V ternary systems that form NiAl/α-refractory metal eutectics and a three phase eutectic in the Ni-Al-Cr-Nb system. Initial screening of these in-situ composites has included morphological characterization, four point bend testing, temperature dependent yield strength evaluation and compressive creep testing. Occasional growth defects termed “banding” currently interrupt the continuity of these composite structures and limit the attainment of optimum properties. However, both the creep strength and toughness of NiAl were improved by in-situ reinforcement.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6d34e23df9d5f02353a26622637eaace https://doi.org/10.1557/proc-273-87 Zobrazit plný text záznamu Full text from SpringerLink