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such as bonding strength, porosity, hardness as well as microstructures were characterized. The results show that the coatings have relatively high heat tremble bond strength, hardness, and typical layer...High temperature behaviors of high velocity arc sprayed Fe-Al/Cr3C2 composite coatingsWeipu Xu, Binshi Xu, Wei Zhang, and Yixiong Wu Welding Institute of Materials Science and Engineering Department......
Using lanthanum to enhance the overall ignition, hardness, tensile and compressive strengths of Mg-0.5Zr alloyGanesh Kumar Meenashisundaram1,Tiong Hou Damien Ong2,Gururaj Parande2,Vyasaraj Manakari2... followed by hot extrusion and were characterized for their microstructural, ignition, hardness, tensile and compression properties. Combined effects of Zr and La assisted in significant grain......
Using lanthanum to enhance the overall ignition, hardness, tensile and compressive strengths of Mg-0.5Zr alloyGanesh Kumar Meenashisundaram1,Tiong Hou Damien Ong2,Gururaj Parande2,Vyasaraj Manakari2... followed by hot extrusion and were characterized for their microstructural, ignition, hardness, tensile and compression properties. Combined effects of Zr and La assisted in significant grain......
Article ID: 1003-6326(2005)05-0978-07 Improvement of wear resistance of AZ31 and AZ91HP by high current pulsed electron beam treatment GAO Bo(高 波)1, 2, HAO Sheng-zhi(郝胜智)2, DONG Chuang(董... by a high current pulsed electron beam(HCPEB). The results show that the cross-sectional microhardness of treated samples increases not only in the heat affected zone(HAZ), but also beyond HAZ, reaching over......
. The results show that W-Mo-Cr alloy materials with high density and high hardness can be prepared by the method of mechanical alloying combining with hot pressing solid phase sintering, and the component... (Key Laboratory for Precision and Nontraditional Machining Technology, Ministry of Education, Dalian University of Technology, Dalian 116024, China) Abstract: In order to obtain high-performance W-Mo......
Sub-Critical Treatment Process of High Cr-W Wear Resistance Cast Iron张海龙,肖念新摘 要:By measuring hardness of high Cr-W wear resistance cast iron after treated... appears under the proper sub-critical treatment process. As a result, the high Cr-W wear resistance cast iron can obtain higher hardness under sub-critical treating at 570 ℃ for 5 h.关键词:......
Effects of honing treatment on AIP-TiN and TiAlN coated end-mill for high speed machining Jae-Young HEO1, Sung-Hak CHO2, Tae-Jin JE2, Kwang-Ho KIM1, Hyung-Woo LEE1, Myung-Chang KANG1 1. National... and coated tools were conducted under high speed machining (HSM) of AISI D2 cold-worked die steel (62 HRC). Consequently, the TiAlN coated end-mill using honing treatment showed excellent tool life under......
properties, such as high stiffness, low density and good corrosion resistance. However, Ti alloys often suffer from poor wear resistance owing to their relatively low hardness which hinders its further... in Al. Mainly due to the reduced TiC volume fraction with increasing depth, the hardness decreases with increasing depth in the laser clad layer with a maximum value of HV1400, about 4.5 times......
In such a condition, liquid phase had enough time to escape towards the low pressure regions, i.e. wall surfaces, and thus formed a thin high liquid fraction region. Fig.8 shows the sample hardness... Trans. Nonferrous Met. Soc. China 20(2010) s906-s910 Rheological behavior, microstructure and hardness of A356 aluminum alloy in semisolid state using backward extrusion process S......
and micro-grooving are observed as dominant abrasive wear mechanisms. Whereas, when a high velocity is employed, only the oxidation mechanism controls the wear behavior of the composites. Key words: metal matrix composite; wear mechanism; friction; hardness 1 Introduction Recently, the in-situ aluminum matrix composites (AMCs) have been applied widely as potential materials in automobile, aerospace......
