Devitrification-induced an Ultrahigh Strength Al-based Composite Maintaining Ductility. Issue 5 (May 2015)

• Record Type: Journal Article
• Authors: Kan, Dong; Li, Xiaopeng; Yang, Baijun; Yang, Hongwang; Wang, Jianqiang
• Is Part Of: Journal of materials science & technology. Volume 31:Issue 5(2015:May)
• Page Start: 489
• Page End: 492
• Publication Date: 2015-05
• Subjects: Al-rich metallic glass -- Devitrification -- Composite -- Mechanical properties; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2014.07.022
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract : A new Al-based composite consisting of submicron-sized α-Al matrix embedded with precipitated intermetallic phases was developed by controlling the devitrification process of an Al–Ni–Y–Co–La amorphous alloy. Such a homogeneous composite structure presented an ultrahigh strength of about 1.34 GPa and a large compressive plastic strain up to 22%. The unique mechanical properties during compression are mainly attributed to the dislocation slip deformation of ductile α-Al matrix and the shear-induced refinement of strengthening intermetallic phases.