Effect of heat treatment on microstructures and mechanical properties of Al/Fe bimetal. Issue 12 (13th August 2018)

• Record Type: Journal Article
• Authors: Jiang, Wenming; Li, Guangyu; Jiang, Zailiang; Wu, Yao; Fan, Zitian
• Is Part Of: Materials science and technology. Volume 34:Issue 12(2018)
• Page Start: 1519
• Page End: 1528
• Publication Date: 2018-08-13
• Subjects: Heat treatment -- Al/Fe bimetallic castings -- interface -- intermetallic compounds -- microstructure -- mechanical properties; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2018.1465620
• Languages: English
• ISSNs: 0267-0836

Abstract

ABSTRACT: The Al/Fe bimetallic castings were prepared by the compound casting combined with hot-dip galvanising and aluminising, and the effect of the heat treatment on microstructures and mechanical properties of the Al/Fe bimetallic castings was systematically studied in the present work. The thickness of the reaction layer of the Al/Fe bimetallic castings continuously increased with increasing solution temperature or prolonging solution time. However, the excessive solution temperature and solution time promoted cracks of the reaction layer. Regardless of as-cast or heat treatment, there were respectively the Fe2 Al5, Al9 Fe4 Si3, FeAl3, Al8 Fe2 Si and Al4.5 FeSi phases in the reaction layers. The nano-hardnesses of the reaction layer after heat treatment exhibited an increase compared to that of the as-cast condition.