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Titolo:
Microstructure evolution of Ni, Cr, Al-TaC in situ composite directionallysolidified under a high temperature gradient
Autore:
Yu, JJ; Zhang, J; Wang, F; Li, JS; Fu, HZ;
Indirizzi:
Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China Northwestern Polytech Univ Xian Peoples R China 710072 , Peoples R China
Titolo Testata:
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
fascicolo: 1-2, volume: 311, anno: 2001,
pagine: 200 - 204
SICI:
0921-5093(20010731)311:1-2<200:MEONCA>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Keywords:
in situ composite; directional solidification; microstructure evolution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Fu, HZ Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China Northwestern Polytech Univ Xian Peoples R China 710072 es R China
Citazione:
J.J. Yu et al., "Microstructure evolution of Ni, Cr, Al-TaC in situ composite directionallysolidified under a high temperature gradient", MAT SCI E A, 311(1-2), 2001, pp. 200-204

Abstract

The effect of solidification rate on the solidified structure, solute segregation and microstructures such as TaC rods volume fraction, TaC rods average spacing, TaC average transverse area and gamma' phase were experimentally investigated under a high temperature gradient by employing a method of directional solidification with liquid metal cooling. Three types of the solidified structure were identified: planar, cellular and dendritic. Both solidified structure and solidification rate had an effect on the eutectic morphologies. The TaC rods volume fraction could be changed with increasing solidification rate. TaC average inter-rods spacing and TaC average transverse areas decreased, the PS (parameter of shape) of gamma ' tends to one andthe size of gamma ' phase decreased with increasing solidification rate. (C) 2001 Elsevier Science S.A. All rights reserved.

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Documento generato il 21/09/18 alle ore 08:37:04