A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat Treatment

The effects of a rolling process and heat treatment on the mechanical and thermal properties of an Al-Si-Fe alloy were studied. The achieved thermal conductivity of the as-rolled alloy treated by a T6 heat treatment was 188.22 W/(m·K), which is as good as that of the as-cast alloy treated b...

Full description

Bibliographic Details
Main Authors:	Yu Guo, Ye Wang, Jieren Yang, Hongyu Xu, Maoliang Hu, Zesheng Ji
Format:	Article
Language:	English
Published:	MDPI AG 2018-12-01
Series:	Metals
Subjects:	rolling heat treatment microstructure thermal conductivity Al-Si-Fe alloy
Online Access:	https://www.mdpi.com/2075-4701/9/1/9

id	doaj-71acc5266adb4a8594d995de2b976ec0
record_format	Article
spelling	doaj-71acc5266adb4a8594d995de2b976ec02020-11-24T21:49:13ZengMDPI AGMetals2075-47012018-12-0191910.3390/met9010009met9010009A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat TreatmentYu Guo0Ye Wang1Jieren Yang2Hongyu Xu3Maoliang Hu4Zesheng Ji5School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150004, ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150004, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150004, ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150004, ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150004, ChinaThe effects of a rolling process and heat treatment on the mechanical and thermal properties of an Al-Si-Fe alloy were studied. The achieved thermal conductivity of the as-rolled alloy treated by a T6 heat treatment was 188.22 W/(m·K), which is as good as that of the as-cast alloy treated by the T6 heat treatment directly, mostly because of changes in the silicon morphology. The results also revealed that the lower quantity of precipitated Al<sub>8</sub>Fe<sub>2</sub>Si and Mg<sub>2</sub>Si phases had no obvious effect on the thermal properties of the material because the interphase spaces between precipitated phases were larger than the mean free path of electrons. However, the precipitated second phases influenced the elongation. The best mechanical properties of the Al-Si-Fe alloy were obtained by rolling and T6 treatment. The corresponding best tensile strength, yield strength, and elongation were 244 MPa, 295 MPa, and 9.56%, respectively, which are attributed to the near-spherical shape, small size, homogeneous distribution of the Si particles, and the precipitation strengthening of Mg<sub>2</sub>Si.https://www.mdpi.com/2075-4701/9/1/9rollingheat treatmentmicrostructurethermal conductivityAl-Si-Fe alloy
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yu Guo Ye Wang Jieren Yang Hongyu Xu Maoliang Hu Zesheng Ji
spellingShingle	Yu Guo Ye Wang Jieren Yang Hongyu Xu Maoliang Hu Zesheng Ji A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat Treatment Metals rolling heat treatment microstructure thermal conductivity Al-Si-Fe alloy
author_facet	Yu Guo Ye Wang Jieren Yang Hongyu Xu Maoliang Hu Zesheng Ji
author_sort	Yu Guo
title	A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat Treatment
title_short	A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat Treatment
title_full	A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat Treatment
title_fullStr	A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat Treatment
title_full_unstemmed	A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat Treatment
title_sort	study of the mechanical and thermal characteristics of an al-si-fe alloy fabricated by rolling and heat treatment
publisher	MDPI AG
series	Metals
issn	2075-4701
publishDate	2018-12-01
description	The effects of a rolling process and heat treatment on the mechanical and thermal properties of an Al-Si-Fe alloy were studied. The achieved thermal conductivity of the as-rolled alloy treated by a T6 heat treatment was 188.22 W/(m·K), which is as good as that of the as-cast alloy treated by the T6 heat treatment directly, mostly because of changes in the silicon morphology. The results also revealed that the lower quantity of precipitated Al<sub>8</sub>Fe<sub>2</sub>Si and Mg<sub>2</sub>Si phases had no obvious effect on the thermal properties of the material because the interphase spaces between precipitated phases were larger than the mean free path of electrons. However, the precipitated second phases influenced the elongation. The best mechanical properties of the Al-Si-Fe alloy were obtained by rolling and T6 treatment. The corresponding best tensile strength, yield strength, and elongation were 244 MPa, 295 MPa, and 9.56%, respectively, which are attributed to the near-spherical shape, small size, homogeneous distribution of the Si particles, and the precipitation strengthening of Mg<sub>2</sub>Si.
topic	rolling heat treatment microstructure thermal conductivity Al-Si-Fe alloy
url	https://www.mdpi.com/2075-4701/9/1/9
work_keys_str_mv	AT yuguo astudyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT yewang astudyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT jierenyang astudyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT hongyuxu astudyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT maolianghu astudyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT zeshengji astudyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT yuguo studyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT yewang studyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT jierenyang studyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT hongyuxu studyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT maolianghu studyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment AT zeshengji studyofthemechanicalandthermalcharacteristicsofanalsifealloyfabricatedbyrollingandheattreatment
_version_	1725888733015703552

A Study of the Mechanical and Thermal Characteristics of an Al-Si-Fe Alloy Fabricated by Rolling and Heat Treatment

Similar Items