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;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......
Homogeneity of microstructure and Vickers hardness in cold closed-die forged spur-bevel gear of 20CrMnTi alloyDONG Li-ying(董丽颖)1, LAN Jian(兰箭)1, 2, ZHUANG Wu-hao(庄武豪)1(1. School of Materials Science... hardness in cold closed-die forged gear of 20CrMnTi alloy is comprehensively studied by using optical microscopy and Vickers hardness tester. The results show that the distribution homogeneity......
down. Finally, the plastic deformation appears when the indenter penetrates into the substrate. The thicker DLC coating increases the Vickers hardness and fracture toughness. Key words: Vickers...; (2) where E is the elastic modulus; Hv is the Vickers hardness; a is the half diagonal distance......
a maximum load of 5000 kg. Fig. 2 Various profiles of tapered cylindrical tool: Fig. 3 Various profiles of triangle tool: Vickers microhardness tests were employed to measure the hardness of welded... next to the TMAZ, and its structure looks like the base metal which means a graduate increase in the hardness. Fig. 6 Vickers microhardness test results for tapered cylindrical (a) and triangle pin......
size, the thickness of lamellar α+β phase, and the Vickers hardness, as well as the relationships between Vickers hardness, grain size and thickness of lamellar α+β phase were investigated. The results show that the greater the modulus, the larger the grain size and the thickness of lamellar α+β phase, and the less the Vickers hardness. The relationship between Vickers hardness and grain size......
Cr3C2及(W,Ti)C对Al2O3/Cr3 C2/(W,Ti)C复合陶瓷材料Vickers硬度的影响 岳雪涛1,薛仲舜2,李成美1,孙德明1,陈怀明1,鹿晓阳1,孙胜3 (1.山东建筑工程学院,济南,250014;2.莱钢集团信莱房地产公司,济南,250021;3.山东大学,材料科学与工程学院,济南,250061) 摘要:热压烧结制备了Al2O3/Cr3C2/(W,Ti)C复合陶瓷材料(以下简称ACW复合材料),对其Vickers硬度及组织形貌进行了研究,分析了Cr3C2及(W,Ti)C对Vickers硬度的影响.结果表明,(W,Ti)C和Cr3C2的添加利于阻止晶界迁移,抑制晶粒长大,Cr,W,Ti离子在Al2O3基体晶粒中的固溶起强化作用.每一相的添加量在10%~20%(体积分数,下同)为宜,添加总量在30%左右ACW复合材料硬度最佳. 关键词:Vickers硬度......
Effect of annealing on the microstructures and Vickers hardness at room temperature of intermetallics in Mo-Si systemYANG Haibo;LI Wei;SHAN Aidang;WU Jiansheng Key Laboratory of Ministry of Education...;正> The microstructures and Vickers hardness at room temperature of arc-melting processed intermetallics ofMo5Si3-MoSi2 hypoeutectic alloy and hypereutectic alloy annealed at 1200℃ for different......
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......
as K00, K20 and K40, they exhibit 153.39, 150.69 and 149.76 W/(m?K), respectively. According to hardness tests, K00, K20 and K40 exhibit 87.9, 259.7 and 344.8 in Vickers values. In the result of salt spray... aluminum plate heat exchangers will be made. Key words: salt water spray test; corrosion resistance; plate heat exchanger; thermal conductivity; Vickers hardness  ......
; (12) The hardness equation of martensite is (13) where HVI denotes the Vickers hardness of I phase; V...J. Cent. South Univ. (2017) 24: 9-16 DOI: 10.1007/s11771-017-3403-2 An optimized hardness model for carburizing-quenching of low carbon alloy steel ZHANG Xing(张星)1, TANG Jin-yuan(唐进元)1, ZHANG Xue......