Gradient structure induced by molybdenum in 90W–Ni–Fe heavy alloy

Autor:	Cao Shunhua, Huan Xu, Huiyuan Liu, Binghuang Chen, Jie Zhu, Ying Jin
Rok vydání:	2014
Předmět:	Materials science Scanning electron microscope Diffusion Alloy Metallurgy Analytical chemistry Sintering chemistry.chemical_element engineering.material Microstructure chemistry Molybdenum Phase (matter) Volume fraction engineering
Zdroj:	International Journal of Refractory Metals and Hard Materials. 43:141-146
ISSN:	0263-4368
DOI:	10.1016/j.ijrmhm.2013.11.017
Popis:	90W(Mo)–Ni–Fe heavy alloy with gradient structure was fabricated by the diffusion of Mo slice from the alloy's surface at 1480 °C. The microstructure and content of binding phase at different regions along the cross section in the samples were investigated by scanning electron microscopy (SEM). The Mo content was determined by energy dispersive analysis (EDS) and the hardness of matrix phase was measured by Vickers' micro-hardness tester. Results show that the grain size, the volume fraction of binding phase and the hardness of matrix phase vary gradually due to the graded distribution of molybdenum. Simultaneously, the interfacial tension gradient induced by the dissolution of molybdenum is the driving force for liquid phase migration during liquid phase sintering.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0c2bcd9bc986eb3e18aebe7c92f363f0 https://doi.org/10.1016/j.ijrmhm.2013.11.017 Zobrazit plný text záznamu Full Text from ScienceDirect