Remelting and solidification of a 6082 Al alloy containing submicron yttria particles: 4D experimental study by in situ X-ray microtomography

被引：19

作者：

Daudin, R. ^{[1
]}

Terzi, S. ^{[2
]}

Lhuissier, P. ^{[1
]}

Salvo, L. ^{[1
]}

Boller, E. ^{[3
]}

机构：

[1] Grenoble Univ, CNRS, UMR 5266, SIMaP GPM2, F-38402 St Martin Dheres, France

[2] European Space Agcy, ESTEC, TEC TS, F-38042 Grenoble 9, France

[3] ESRF, F-38043 Grenoble 9, France

来源：

MATERIALS & DESIGN | 2015年 / 87卷

关键词：

Nano-composites; In situ micro-tomography; Solidification; Pushing-engulfment; METAL-MATRIX COMPOSITES; MECHANICAL-PROPERTIES; FOREIGN PARTICLES; CU ALLOY; MICROSTRUCTURE; ENGULFMENT; INTERFACE; BEHAVIOR; NANOCOMPOSITES; SIMULATION;

D O I：

10.1016/j.matdes.2015.07.141

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The behaviour of submicron Y2O3 particles incorporated in a 6082 alloy was characterized by in situ X-ray microtomography during remelting and solidification. The presence and spatial distribution of the Y2O3 particles in the alloy were revealed through the dissolution of the intermetallic phase upon remelting. They were mostly found agglomerated at grain boundaries suggesting that particle pushing is likely to be the predominant mechanism in interfacial interactions. This trend was then confirmed by the direct observation of the solidification process from the fully molten state showing clusters of yttria particles pushed by growing dendrites. In addition to providing fundamental insights into the solidification of nano-composites, these results also point out potential issues in recycling these materials and the necessity to re-disperse particles after a remelting step. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：313 / 317

页数：5

共 28 条

[1] Fabrication and study on mechanical properties and fracture behavior of nanometric Al2O3 particle-reinforced A356 composites focusing on the parameters of vortex method [J].

Akbari, M. Karbalaei ;

Mirzaee, O. ;

Baharvandi, H. R. .

MATERIALS & DESIGN, 2013, 46 :199-205

[2] THE ENGULFMENT OF FOREIGN PARTICLES BY A FREEZING INTERFACE [J].

ASTHANA, R ;

TEWARI, SN .

JOURNAL OF MATERIALS SCIENCE, 1993, 28 (20) :5414-5425

[3] THEORY FOR INTERACTION OF PARTICLES WITH A SOLIDIFYING FRONT [J].

BOLLING, GF ;

CISSE, J .

JOURNAL OF CRYSTAL GROWTH, 1971, 10 (01) :56-&

[4]

Campbell J., 2003, CASTINGS, V2nd

[5] Brownian Motion Effects on Particle Pushing and Engulfment During Solidification in Metal-Matrix Composites [J].

Ferguson, J. B. ;

Kaptay, George ;

Schultz, Benjamin F. ;

Rohatgi, Pradeep K. ;

Cho, Kyu ;

Kim, Chang-Soo .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (10) :4635-4645

[6] Development of a laser-based heating system for in situ synchrotron-based X-ray tomographic microscopy [J].

Fife, Julie L. ;

Rappaz, Michel ;

Pistone, Mattia ;

Celcer, Tine ;

Mikuljan, Gordan ;

Stampanoni, Marco .

JOURNAL OF SYNCHROTRON RADIATION, 2012, 19 :352-358

[7] Growth of 'dizzy dendrites' in a random field of foreign particles [J].

Gránásy, L ;

Pusztai, T ;

Warren, JA ;

Douglas, JF ;

Börzsönyi, T ;

Ferreiro, V .

NATURE MATERIALS, 2003, 2 (02) :92-96

[8]

Hamilton RW, 2011, SHAPE CASTING: 4TH INTERNATIONAL SYMPOSIUM 2011 IN HONOR OF PROF. JOHN T. BERRY, P87

[9] Particle engulfment and pushing by solidifying interfaces: Part I. Ground experiments [J].

Juretzko, FR ;

Dhindaw, BK ;

Stefanescu, DM ;

Sen, S ;

Curreri, PA .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1998, 29 (06) :1691-1696

[10] Solidification behaviour of ceramic particle reinforced Al-alloy matrices [J].

Karantzalis, A. E. ;

Lekatou, A. ;

Georgatis, E. ;

Mavros, H. .

JOURNAL OF MATERIALS SCIENCE, 2010, 45 (08) :2165-2173

← 1 2 3 →