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Instrumented and Vickers Indentation for the Characterization of Stiffness,Hardness and Toughness of Zirconia Toughened Al2O3 and SiC ArmorAleksandra Nastic1,Ali Merati2,Mariusz Bielawski2,Olaniyi... indentation testing and microstructure analysis were used to investigate zirconia toughened alumina(ZTA) and silicon carbide(SiC).Several equations were studied to relate the Vickers indentation hardness,Young......
In-situ Observation of Crack Growth and Domain Switching Around Vickers Indentation on BaTiO3 Single Crystal Under Sustained Electric FieldBing JIANG1,Meicheng LI11. State Key Laboratory of Alternate... switching process around the indentation on the surface of barium titanate single crystal under the external electric field was investigated by atomic force microscope and polarized light......
four elastic-plastic parameters through an indentation curve such as Young s modulus E, hardness H, yield strength σy and strain hardening exponent n. In this paper, mathematical analysis on a reverse... of Π2 in these two ranges. E and H can be uniquely determined by a full indentation curve, and σy can be determined if n is unique. Furthermore, sensitivity analysis on obtaining n from dimensionless......
;维氏硬度 中图分类号:TH140.7 文献标志码:A Method for determining Vickers hardness of materials by Vickers instrumented indentation work ratio and martens hardness WANG Jia-liang, MA De-jun... hardness does not recognize during the traditional Vickers hardness testing. The instrumented indentation test were analyzed by employing dimensional theorem and finite element method, meanwhile......
elastic modulus by instrumented indentation test MA De-jun (Department of Mechanical Engineering, The Academy of Armored Forces Engineering, Beijing 100072, China) Abstract: The instrumented indentation... and an indented material. Consequently, an approximate relationship between the ratio of nominal hardness to the combined elastic modulus and the ratio of unloading work to total work in indentation......
dynamics simulation of stress-induced crystallization behavior during indentation for metallic glass WANG Hai-long, WANG Xiu-xi, WANG Yu, LIANG Hai-yi (CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, China) Abstract: The stress-induced crystallization behavior was simulated during the indentation deformation......
in inhibiting grain growth. The effects of alloying elements on Vickers microhardness and indentation size effect of base alloy were examined. Key words: magnesium alloys; alloying elements; CALPHAD method; hardness; indentation size effect 1 Introduction Due to the worldwide emphasis on fuel efficiency in automobiles, there has been increasing interest in the application of magnesium alloys......
有规律地变大;通过分析其蠕变前后的微观结构和组织的变化,认为Sn-3.5Ag-2Bi无铅焊料蠕变塑性变形机制主要由位错滑移和位错攀移共同控制. 关键词:Sn-3.5Ag-2Bi无铅焊料;压入蠕变;应力指数;激活能;微观组织 中图分类号:TG 111.8 文献标识码:A Indentation creep behavior... of Materials Science and Engineering, Xihua University, Chengdu 610039, China) Abstract: The indentation creep stress exponent (n), creep activation energy (Q) and material structure constant......
Evaluation of interfacial strength by an instrumented indentation method and its application to an actual TBC vaneShin-ichiro KUGA2,Toshihiko YOSHIDA2,32. Department of Advanced Production Systems... was investigated. And also the interfacial strengths of thermal barrier coated specimens subjected to thermal fatigue, as well as a retired TBC vane were also evaluated by means of an instrumented indentation......
Trans. Nonferrous Met. Soc. China 25(2015) 811-816 Microstructure and indentation toughness of Cr/CrN multilayer coatings by arc ion plating Gui-hong SONG1, Zhuo LUO1, Feng LI1, Li-jia CHEN1, Chun... decreases with the shortening of the bilayer period (or increasing volume fraction of Cr layer). The Cr/CrN multilayer coating with 862 nm period possesses the highest indentation toughness due......