Vickers hardness and compressive properties of bulk metallic glasses and nanostructure-dendrite composites

IMR OpenIR

	Vickers hardness and compressive properties of bulk metallic glasses and nanostructure-dendrite composites
	X. F. Pan; H. Zhang; Z. F. Zhang; M. Stoica; G. He; J. Eckert
	2005
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	20 期号:10 页码:2632-2638
摘要	The compressive properties and the Vickers hardness of Cu-, Fe-, Mg-, and Zr-based monolithic bulk metallic glasses (BMGs) as well as Ti-based nanostructure-dendrite composites were investigated and compared. The monolithic BMGs exhibit nearly the same yield strength cry and fracture strength sigma(f) but poor plasticity. The Vickers hardness H-V of the monolithic BMGs follows the empirical relationship H-V/3 approximate to sigma(y) approximate to sigma(f). The Ti-based composites yield at a relatively low stress level (less than 850 MPa) but fail at a very high fracture stress (similar to 2 GPa) and exhibit a large strain hardening ability. Accordingly, the Vickers hardness H-V of the Ti-based nanostructure-dendrite composites obeys the relationship sigma(y) < H-V/3 < sigma(f). Based on these results, the relationship between the Vickers hardness and the compressive properties of the investigated materials will be discussed by taking the yield and fracture strength (sigma(y) and sigma(f)), the strain hardening exponent n, and the elastic and plastic energy stored upon deformation (delta(E) and delta(P)) into account.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. tianjin univ, sch mat sci & engn, tianjin 300072, peoples r china. leibniz inst solid state & mat res dresden, inst met mat, d-01171 dresden, germany. shanghai jiao tong univ, sch mat sci & engn, shanghai 200030, peoples r china. th darmstadt, dept mat & geo sci, div phys met, d-64287 darmstadt, germany.;zhang, zf (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn
关键词	Mechanical-properties Amorphous-alloys Enhanced Plasticity Supercooled Liquid Ductile Dendrites Shear Fracture Cu-zr Ti Deformation Strength
URL	查看原文
WOS记录号	WOS:000232459000006
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34995
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. F. Pan,H. Zhang,Z. F. Zhang,et al. Vickers hardness and compressive properties of bulk metallic glasses and nanostructure-dendrite composites[J]. Journal of Materials Research,2005,20(10):2632-2638.
APA	X. F. Pan,H. Zhang,Z. F. Zhang,M. Stoica,G. He,&J. Eckert.(2005).Vickers hardness and compressive properties of bulk metallic glasses and nanostructure-dendrite composites.Journal of Materials Research,20(10),2632-2638.
MLA	X. F. Pan,et al."Vickers hardness and compressive properties of bulk metallic glasses and nanostructure-dendrite composites".Journal of Materials Research 20.10(2005):2632-2638.