The Microalloying Effect of Ce on the Mechanical Properties of Medium Entropy Bulk Metallic Glass Composites

doi:10.3390/cryst9090483

	The Microalloying Effect of Ce on the Mechanical Properties of Medium Entropy Bulk Metallic Glass Composites
	Zhao, Yanchun 1,2; Zhao, Pengbiao 2; Li, Wensheng 1,2; Kou, Shengzhong 1,2; Jiang, Jianlong 2; Mao, Xuejing 2; Yang, Zhuang 2
刊名	CRYSTALS
	2019-09
卷号	9 期号:9
关键词	bulk metallic glass composites martensitic phase transformation mechanical property
ISSN号	2073-4352
DOI	10.3390/cryst9090483
英文摘要	Novel ultra-strong medium entropy bulk metallic glasses composites (BMGCs) Fe65.4-xCexMn14.3Si9.4Cr10C0.9 and Ti40-xCexNi40Cu20 (x = 0, 1.0), through the martensite transformation induced plasticity (TRIP effect) to enhance both the ductility and work-hardening capability, were fabricated using magnetic levitation melting and copper mold suction via high frequency induction heating. Furthermore, the Ce microalloying effects on microstructure and mechanical behaviors were studied. The Fe-based BMGCs consisted of face-centered cubic (fcc) gamma-Fe and body-centered cubic (bcc) alpha-Fe phase, as well as Ti-based BMGCs containing supercooled B2-Ti (Ni, Cu) and a thermally induced martensite phase B19'-Ti (Ni, Cu). As loading, the TRIP BMGCs exhibited work-hardening behavior, a high fracture strength, and large plasticity, which was attributed to the stress-induced transformation of epsilon-Fe martensite and B19'-Ti (Ni, Cu) martensite. Ce addition further improved the strengthening and toughening effects of TRIP BMGCs. Adding elemental Ce enhanced the mixing entropy Delta S-mix and atomic size difference delta, while reducing the mixing enthalpy Delta H-mix, thus improving the glass forming ability and delaying the phase transition process, and hence prolonging the work-hardening period before fracturing. The fracture strength sigma(f) and plastic stress epsilon(p) of Ti39CeNi40Cu20 and Fe64.4CeMn14.3Si9.4Cr10C0.9 alloys were up to 2635 MPa and 13.8%, and 2905 MPa and 30.1%, respectively.
资助项目	National Natural Science Foundation of China[51661017] ; Outstanding Youth Funds of Gansu Province of China[17JR5RA108] ; Hongliu Outstanding Talents Program of Lanzhou University of Technology[2018]
WOS研究方向	Crystallography ; Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000487979700012
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31594]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Zhao, Yanchun; Li, Wensheng
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Dept Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yanchun,Zhao, Pengbiao,Li, Wensheng,et al. The Microalloying Effect of Ce on the Mechanical Properties of Medium Entropy Bulk Metallic Glass Composites[J]. CRYSTALS,2019,9(9).
APA	Zhao, Yanchun.,Zhao, Pengbiao.,Li, Wensheng.,Kou, Shengzhong.,Jiang, Jianlong.,...&Yang, Zhuang.(2019).The Microalloying Effect of Ce on the Mechanical Properties of Medium Entropy Bulk Metallic Glass Composites.CRYSTALS,9(9).
MLA	Zhao, Yanchun,et al."The Microalloying Effect of Ce on the Mechanical Properties of Medium Entropy Bulk Metallic Glass Composites".CRYSTALS 9.9(2019).