Effect of Particle Size Distribution and Sintering Conditions on Moulding,Microstructure and Properties of MIM 17-4PH
17-4PH precipitation hardened stainless steel is one of the most popular alloys used in Metal Injection Moulding and in emerging 3D printing applications today.It is known that the properties achieved can vary significantly depending on chemistry,particle size,powder loading and other process variables that affect final density and phase structure.In this paper the results of a systematic study on the effects of gas atomised particle size distribution and powder loading in a proprietary polyoxymethylene-based binder system,designed to enhance moulding performance for components with high aspect ratio or think wall sections,on sintering behaviour and properties of 17-4PH are reported.Various size fractions(90%-10μm,90%-22μm and-32μm)of gas atomised powder were extracted from the same production campaign and used for moulding test samples.The relative merits of different size distributions are discussed in terms of injection and sintering performance,shrinkage ratio and phase transformation.
Hsieh Shu-Hsu Chueh Chung-Huei Chen I-Shiuan Kearns Martin A. Davies Paul A. Murray Keith Johnston Mary-Kate
Chenming Mold Ind.Corp.(UNEEC),2F,No.27,Sec.6,Minquan E.Rd.,Neihu Dist.,Taipei City 114,Chinese Taip Sandvik Osprey Ltd.,Red Jacket Works,Milland Road,Neath,SA11 1NJ,United Kingdom
国际会议
北京
英文
651-660
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）