Heat treatment effect on the microstructure, tensile properties and dry sliding wear behavior of A356-10%B4C cast composites

被引：106

作者：

Lashgari, H. R. ^{[1
]}

Zangeneh, Sh. ^{[1
]}

Shahmir, H. ^{[1
]}

Saghafi, M. ^{[1
]}

Emamy, M. ^{[1
]}

机构：

[1] Univ Tehran, Sch Met & Mat, Ctr Excellence High Performance Mat, Tehran, Iran

来源：

MATERIALS & DESIGN | 2010年 / 31卷 / 09期

关键词：

ABRASIVE WEAR; ALLOY; SILICON; MG;

D O I：

10.1016/j.matdes.2010.04.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In present paper, an attempt was made to examine the influence of T6 heat treatment (solution treatment at 540 degrees C for 5 h, quenching in hot water and artificial aging at 170 degrees C for 8 h) on the microstructure, tensile properties and dry sliding wear behavior of A356-10%B4C cast composites. The composite ingots were made by stir casting process. In this work, the matrix alloy and composite were characterized by optical microscope, scanning electron microscope equipped with energy dispersive X-ray spectroscopy, tensile tests and conventional pin-on-disk experiment. The obtained results showed that in Al-B4C composite, T6 treatment was a dominant factor on the hardness improvement in comparison with hardness increasing due to the addition of B4C hard particles. In addition, T6 treatment can contribute to the strong bonding between B4C and matrix alloy and also it can change eutectic silicon morphology from acicular to near spherical. This case can lead to higher strength and wear properties of heat treated metal matrix composites in comparison with unheat treated state. Observation of worn surfaces indicated detachment of mechanically mixed layer which can primarily due to the delamination wear mechanism under higher applied load. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：4414 / 4422

页数：9

共 17 条

[1] The effect of Mg on the microstructure and mechanical behavior of Al-Si-Mg casting alloys
Caceres, CH
Davidson, CJ
Griffiths, JR
Wang, QG
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (10): : 2611 - 2618
[2] The effect of a T6 heat treatment on the fretting wear of a SiC particle-reinforced A356 aluminum alloy matrix composite
Chen, R
Iwabuchi, A
Shimizu, T
[J]. WEAR, 2000, 238 (02) : 110 - 119
[3] Synergic effect of reinforcement and heat treatment on the two body abrasive wear of an Al-Si alloy under varying loads and abrasive sizes
Das, S.
Mondal, D. P.
Sawla, S.
Ramakrishnan, N.
[J]. WEAR, 2008, 264 (1-2) : 47 - 59
[4] Influence of heat treatments on the wear behaviour of an AA6092/SiC25p composite
de Salazar, JMG
Barrena, ML
[J]. WEAR, 2004, 256 (3-4) : 286 - 293
[5] Dry sliding wear of aluminium composites - A review
Deuis, RL
Subramanian, C
Yellup, JM
[J]. COMPOSITES SCIENCE AND TECHNOLOGY, 1997, 57 (04) : 415 - 435
[6] A parametric study of the relationship between microstructure and wear resistance of Al-Si alloys
Elmadagli, M.
Perry, T.
Alpas, A. T.
[J]. WEAR, 2007, 262 (1-2) : 79 - 92
[7] The effect of Al-5Ti-1B on the microstructure, hardness and tensile properties of Al2O3 and SiC-containing metal-matrix composites
Emamy, A.
Razaghian, A.
Lashgari, H. R.
Abbasi, R.
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 485 (1-2): : 210 - 217
[8] Metal matrix composites: production by the stir casting method
Hashim, J
Looney, L
Hashmi, MSJ
[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1999, 93 : 1 - 7
[9] The effect of strontium on the microstructure and wear properties of A356-10%B4C cast composites
Lashgari, H. R.
Sufizadeh, A. R.
Emamy, M.
[J]. MATERIALS & DESIGN, 2010, 31 (04) : 2187 - 2195
[10] The effect of strontium on the microstructure, porosity and tensile properties of A356-10%B4C cast composite
Lashgari, H. R.
Emamy, M.
Razaghian, A.
Najimi, A. A.
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 517 (1-2): : 170 - 179

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