Analysis of Density and Mechanical Properties of Iron Powder with Upper Relaxation Assist through High Velocity Compaction

摘要：

　　For producing higher density PM parts a new method,High-Velocity Compaction process with additional upper relaxation assist (URA) device is presented in the paper.Using zinc stearate as a die wall lubricant,iron powder was pressed with and without upper relaxation assist device of mass 0.14 Kg focusing to investigate the density and mechanical properties.To explain a compaction process in loading stage a conservation of momentum principle has been introduced during collision of hammer,upper piston and upper relaxation assist device in die compaction.To observe the morphological characteristics and mechanical properties,a scanning electron microscopy (SEM) and computer controlled universal testing machine were used.The experimental results showed that the samples compacted with URA device had an improved green density and mechanical properties compared to the samples compacted in the absence of URA device.

关键词： HVC Green density Mechanical properties Iron powder URA device

作者: Dil Faraz Khan Haiqing Yin Matiullah

作者单位: State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing School of Materials Science and Engineering, University of Science and Technology Beijing,Beijing, 1

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 41-46

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）