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The Morphology of Rolling Contact Fatigue Fracture of Hardened Steels王绪,章守华,崔佩庸摘 要:<正> Rolling Contact Fatigue(RCF) is a cumulativedamage phenomenon when metals are subjectedto repeated contact stresses. The fomationof pitting on the contact surface is the resultof the rolling contact fatigue. The morphologiesof rolling contact fatigue fracture......
Preparation of spray deposited aluminum alloy sheets via novel rolling technique ZHANG Hao(张昊), CHEN Zhen-hua(陈振华), YAN Hong-ge(严红革), CHEN Ding(陈鼎), LI Wei(李微) College of Materials Science...; Abstract: A novel ceramic rolling technique was developed to improve the formability of spray deposited porous aluminum alloy sheets, in which the sheet preform......
Strip shape control capability of hot wide strip rolling millsRenzhong Wang Quan Yang Anrui He Jian Shao Haitao Bian National Engineering Research Center for Advanced Rolling,University of Science and Technology Beijing,Beijing 100083,China摘 要:<正>The elasticity deformation of rolls was analyzed by means of two-dimensional finite element method(FEM......
on the microstructure and texture development of AZ series alloy. In this study, the average texture of ZK60 Mg alloy produced by twin roll cast and warm rolling with different per pass thickness reduction.... The thickness of initial strip was 3.5 mm. Warm rolling was performed in several passes to reduce the sheet thickness to 0.5 mm under various rolling temperature with 50% per pass thickness reduction. The warm......
Mathematic model of rolling pressure during a semisolid shearing-rolling processRen-guo Guan, Zhan-yong Zhao, Chao Lian, Qiu-sheng Zhang, and Chun-ming Liu College of Materials and Metallurgy, Northeastern University, Shenyang 110819, China摘 要:A mathematic model of rolling pressure during a novel semisolid shearing-rolling process was established......
℃ for 10 h. The rolling was performed on a roll mill equipped with an induction heating system to heat the rolls during rolling. For each pass of rolling, the thickness reduction was 30%-35%, the rolling... that the microstructures of Fig.2 Microstructures of as-rolled AZ31 Mg alloy after different rolling passes: (a) As-homogenized; (b) 1 pass; (c) 2 passes; (d) 3 passes; (e) 4 passes; (f) 5 passes Fig.3 Average......
and solidification rates of spray forming process, and, therefore showing excellent workability. It can be hot-rolled with nearly 20% reduction for one pass at lower temperatures (330-360℃), and the total reduction... of 15%-20% for one pass. The total reduction in thickness was 80%. Ageing treatment was carried out in a nitrogen atmosphere (T5) at 185 ℃ for 0-8 h. The micro- structural features of the as-spray......
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containing metal flow and temperature field for calculating temperature variation has been developed on fourteen-pass hot continu-ous rolling of round rod for Inconel 718 alloy using 3D elastic-plastic finite... rolling practice, the simulated surface temperature was examined and is in good agreement with the measured one. Key words:Hot continuous rolling; Elastic-plastic finite element method (FEM); Coupled......
Deformation Characteristic of Aluminum Sheet/Powders/Aluminum Sheet Sandwich Rolling ProcessZHANG Min1,CHEN Changjun1,CHANG Qingming21. School of Mechanical and Electrical Engineering,Laser... sheet sandwich rolling process which was applied to manufacturing precursor of foam aluminum sandwich panel was put forward. The purpose of sandwich rolling was to obtain high densification precursor......
