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Effect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al-12Si alloy
Aktarer, S. M.; Sekban, D. M.; Saray, O.; Kucukomeroglu, T.; Ma, Z. Y.; Purcek, G.; purcek@ktu.edu.tr
2015
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume636Pages:311-319
AbstractThe effect of two-pass friction stir processing (FSP) on the microstructural evolution, mechanical properties and impact toughness of as-cast Al-12Si alloy was investigated systematically. Severe plastic deformation imposed by FSP resulted in a considerable fragmentation of the needle-shaped eutectic silicon particles into the smaller ones. The length of eutectic Si particles decreased from 27 +/- 23 mu m to about 2.6 +/- 2.4 mu m. The average aspect ratio of 6.1 +/- 5.1 for eutectic Si particles in the as-cast state decreased to about 2.6 +/- 1.0 after FSP with a corresponding increase in their roundness. The hardness, strength, ductility and impact toughness of the alloy increased simultaneously after two-pass FSP. The increase in the yield and tensile sirength values after FSP was about 20% and 29%, respectively. The FSPed alloy exhibited 25% elongation to failure and 15% uniform elongation which were almost seven times and five times higher, respectively, than those of the as-cast alloy. The hardness of the alloy increased from 58 Hv0.5 for the as-cast state to about 67 Hv0.5 after FSP. The absorbed energy during impact test increased to about 8.3 J/cm(2) after FSP, which is about seven times higher than that of the as-cast alloy. Improvements in all mechanical properties were mainly attributed to the radical changes of the shape, size arid distribution of the eutectic silicon particles along with the breakage and refined of the large alpha-Al grains during two-pass FSP. (C) 2015 Elsevier B.V. All rights reserved.
description.department[aktarer, s. m.] recep tayyip erdogan univ, dept automot technol, rize, turkey ; [sekban, d. m.] karadeniz tech univ, dept naval architecture & marine engn, trabzon, turkey ; [saray, o.] bursa tech univ, dept mech engn, bursa, turkey ; [kucukomeroglu, t. ; purcek, g.] karadeniz tech univ, dept mech engn, trabzon, turkey ; [ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
KeywordFriction Stir Processing Al-12si Alloy Microstructure Hardness Tensile Properties Impact Toughness
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74777
Collection中国科学院金属研究所
Corresponding Authorpurcek@ktu.edu.tr
Recommended Citation
GB/T 7714
Aktarer, S. M.,Sekban, D. M.,Saray, O.,et al. Effect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al-12Si alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2015,636:311-319.
APA Aktarer, S. M..,Sekban, D. M..,Saray, O..,Kucukomeroglu, T..,Ma, Z. Y..,...&purcek@ktu.edu.tr.(2015).Effect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al-12Si alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,636,311-319.
MLA Aktarer, S. M.,et al."Effect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al-12Si alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 636(2015):311-319.
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