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Friction stir processing of thixoformed AZ91D magnesium alloy and fabrication of Al-rich surface CHEN Ti-jun(陈体军), ZHU Zhan-ming(朱战民), LI Yuan-dong(李元东), MA Ying(马 颖), HAO Yuan(郝 远) State Key...-mechanically affected zone were investigated during friction stir processing (FSP) of the thixoformed AZ91D alloy. Simultaneously, an Al-rich surface layer was prepared by combination of Al powder......
New type of groove used to improve friction in roll forgingJIA Zhi(贾智) , ZHOU Jie(周杰), JI Jin-jin(姬金金) (School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China)Abstract:A FEM model for a failed industrial example of roll forging was established to analyze the generation mechanisms of the mismatch of size and shape of two spring board. To demonstrate......
A comparative study between friction stir processing and friction stir vibration processing to develop magnesium surface nanocompositesBehrouz Bagheri1,Mahmoud Abbasi2,Amin Abdollahzadeh3,4,Amir...">Friction stir processing(FSP) can be used to improve surface composites. In this study, a modified method of FSP called friction stir vibration processing(FSVP) was applied to develop a surface composite......
A NOVEL APPROACH FOR THE PREDICTION OF SURFACE PROFILE OF OUTGOING WORKPIECE AND THE CALCULATION OF MEAN ROLL RADIUS IN ALLOY BAR ROLLING Y.G. Dong1,W.Z. Zhang1,J.F. Song2 (1.College of Mechanical... groove. Key words:alloyed steel; surface profile; mean roll radius; critical point; rigid-plastic FEM (finite element method); [全文内容正在添加中] ......
and No. 9 are slightly lower. Moreover, the friction coefficients of the rest samples are significantly lower than that of sample No. 0. The surface texture of artificial micro- processing is able...J. Cent. South Univ. (2017) 24: 303-310 DOI: 10.1007/s11171-017-3431-6 Friction properties of groove texture on Cr12MoV surface WANG Jing(王敬)1, 2, ZHOU Jie(周杰)1, ZHU Shan-shan(朱姗姗)1, ZHANG Jian......
J. Cent. South Univ. Technol. (2009) 16: 0525-0529 DOI: 10.1007/s11771-009-0087-2 Wet friction performance of C/C-SiC composites prepared by new processing route WANG Xiu-fei(王秀飞)1, 2, 3, YIN... and pyrocarbons as well as among the pryocarbons. The dynamic friction coefficient of the composites decreases gradually from 0.126 to 0.088 with the increase of the surface pressure from 0.5 to 2.5 MPa......
of the friction pairs lubricated with A oil are higher than those lubricated with B oil. In all testing course, friction pairs whose surface roughness value is Ra1=0.636 μm (machine processing... are always in mixed lubrication, as shown in Fig.2(a). The lubrication state of friction pairs whose surface roughness values are respectively Ra2=0.229 μm (refined processing) and Ra3= 0.022 μm (ultrafine......
Friction Stir Processing of Thixoformed AZ91D Magnesium Alloy and Fabrication of Surface Composite Reinforced by SiCps陈体军State Key Laboratory of Gansu Advanced Nonferrous Materials, Lanzhou University of Technology摘 要:The microstructural evolution characteristics of the thermomechanically affected zone (TMAZ) alloy during friction stir processing (FSP......
Friction Stir Processing of Thixoformed AZ91D Magnesium Alloy and Fabrication of Surface Composite Reinforced by SiC_ps陈体军State Key Laboratory of Gansu Advanced Nonferrous Materials, Lanzhou University of Technology摘 要:The microstructural evolution characteristics of the thermomechanically affected zone (TMAZ) alloy during friction stir processing (FSP......
and conditions 3.1 Experimental systems Processing system for machining the micro prism patterns on roll master is shown in Fig.4. The specifications of the system are listed in Table 1. This system is based... and shown in Fig.11. Every chip is created as flow type. Smooth surfaces form at the outside which is the friction surface. And micro creases are observed at the inside of chip. As shown in Fig.11......