Microstructure-based numerical simulation of the mechanical properties and fracture of a Ti-Al3Ti core-shell structured particulate reinforced A356 composite

doi:10.1016/j.matdes.2020.108685

	Microstructure-based numerical simulation of the mechanical properties and fracture of a Ti-Al3Ti core-shell structured particulate reinforced A356 composite
	Ma, Siming 2; Zhang, Xuezheng 1; Chen, Tijun 1; Wang, Xiaoming 2
刊名	Materials and Design
	2020-06-01
卷号	191
关键词	Aluminum alloys Aluminum metallography Binary alloys Crack tips Ductile fracture Finite element method Mechanical properties Metallic matrix composites Microstructure Numerical models Particle reinforced composites Particles (particulate matter) Polymer blends Reinforcement Scanning electron microscopy Shells (structures) Tensile testing Ternary alloys Titanium alloys Vanadium metallography Volume measurement Aluminum matrix composites In-situ tensile test Local stress concentration Micro-structural observations Representative volume element (RVE) Shell structure Two Dimensional (2 D) Uniform distribution
ISSN号	02641275
DOI	10.1016/j.matdes.2020.108685
英文摘要	A microstructure-based numerical simulation is performed to understand the mechanical properties and fracture of a Ti-Al3Ti core-shell structured particulate reinforced A356 composite ((Ti-Al3Ti)cs/A356). A series of two-dimensional (2D) representative volume element (RVE) models are generated automatically by embedding Ti-Al3Ti core-shell structured particulates in an A356 matrix. Microstructure-based 2D RVE of monolithic Al3Ti particulate reinforced A356 composite (Al3Tip/A356) is also simulated for comparison. The ductile fracture of both Ti core and A356 matrix as well as the brittle fracture of the Al3Ti shell are considered. The simulation confirms that the high elongation of the (Ti-Al3Ti)cs/A356 composite is attributed to the uniform distribution of the overall ductile globular reinforcing particulates, which prevent a premature failure effectively by reducing local stress concentration both on and inside the core-shell structured particulates. The surrounding ductile phases of the Al3Ti shell blunt the crack tips effectively and, therefore, restricting the propagation of the cracks in a nominal strain range of 2.2%–6.1%. For both (Ti-Al3Ti)cs/A356 and Al3Tip/A356 composites, the simulation results are in good agreement with microstructural observations during an in-situ tensile test in a scanning electron microscope. © 2018
WOS研究方向	Materials Science
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000536937200083
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115423]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 2.School of Engineering Technology, Purdue University, 401 N. Grant Street, West Lafayette; IN; 47906, United States;
推荐引用方式 GB/T 7714	Ma, Siming,Zhang, Xuezheng,Chen, Tijun,et al. Microstructure-based numerical simulation of the mechanical properties and fracture of a Ti-Al3Ti core-shell structured particulate reinforced A356 composite[J]. Materials and Design,2020,191.
APA	Ma, Siming,Zhang, Xuezheng,Chen, Tijun,&Wang, Xiaoming.(2020).Microstructure-based numerical simulation of the mechanical properties and fracture of a Ti-Al3Ti core-shell structured particulate reinforced A356 composite.Materials and Design,191.
MLA	Ma, Siming,et al."Microstructure-based numerical simulation of the mechanical properties and fracture of a Ti-Al3Ti core-shell structured particulate reinforced A356 composite".Materials and Design 191(2020).