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simulations for metal powder compaction of a clutch plate were performed to examine the stresses during compaction,unloading,and ejection.To describe the mechanical behavior of compacted green body... initiation and fracture is necessary in order to obtain uniform density and crackfree components in the manufacturing of metal powder compaction.关键词:......
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chemical composition, powder properties, and compaction energy. We investigated four models using an experimental dataset for appropriate model selection and found the multilayer perceptron model worked...A novel approach to predict green density by high-velocity compaction based on the materials informatics methodKai-qi Zhang1,Hai-qing Yin1,2,3,Xue Jiang1,Xiu-qin Liu4,Fei He1,Zheng-hua Deng1,5,Dil......
Low cycle fatigue improvement of powder metallurgy titanium alloy through thermomechanical treatment LIU Bin(刘 彬)1, LIU Yong(刘 咏)1, HE Xiao-yu(何小禹)1, TANG Hui-ping(汤慧萍)2, CHEN Li-fang(陈丽芳)1 1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. State Key Laboratory of Porous Materials Technology, Xi’an 710016, China Received 5 June 2007......
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composites reinforced with SiC, and the characterization of their microstructure and mechanical behavior. The mechanically milled Al7075 micron-sized powder and SiC nanoparticles are dynamically compacted using a drop hammer device. This compaction is performed at different temperatures and for various volume fractions of SiC nanoparticles. The relative density is directly related to the compaction......
Research of warm compaction technology on nylon bonded Nd-Fe-B magnets Xiuhai ZHANG1,Dameng YE1,Jun QU1,Zhenhua YAO1,Weihao XIONG1 (1.State Key Laboratory of Material Processing and Die & Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,China) Abstract:Warm compaction and room temperature compaction were applied to prepare bonded Nd-Fe-B magnets. The results......
J. Cent. South Univ. (2020) 27: 1611-1623 DOI: https://doi.org/10.1007/s11771-020-4394-y New development of powder metallurgy in automotive industry TAN Zhao-qiang(谭兆强)1, 2, ZHANG Qing(张青)2, GUO Xue-yi(郭学益)3, ZHAO Wei-jiang(赵伟江)1, ZHOU Cheng-shang(周承商)1, LIU Yong(刘咏)1 1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. Hoganas (China) Co., Ltd......
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was reached. Results show that by controlling debinding process, complex parts with good shape consistence can be obtained by warm compaction of binder-treated powder. Fine and shiny surface was obtained and no surface defect can be observed for sintered parts debinded at 2 ℃/min, while defect can be observed in sintered parts debinded at 4 ℃/min. Key words: binder-treated powder; warm compaction......