Effect of weld line positions on the tensile deformation of two-component metal injection moulding  

作　　者：Anchalee Manonukul Sukrit Songkuea Pongporn Moonchaleanporn Makiko Tange 

机构地区：[1]National Metal and Materials Technology Center(MTEC),National Science and Technology Development Agency(NSTDA),114 Thailand Science Park,Paholyothin Road,Klong 1,Klong Luang,Pathumthani 12120,Thailand [2]Taisei Kogyo(Thailand)Co.,Ltd.,Room INC2D-409,Innovation Cluster 2 Building,Tower D,141 Thailand Science Park,Paholyothin Road,Klong 1,Klong Luang Pathumthani 12120,Thailand

出　　处：《International Journal of Minerals,Metallurgy and Materials》2017年第12期1384-1393,共10页矿物冶金与材料学报（英文版）

基　　金：co-funded by the National Metal and Materials Technology Center (MTEC),Thailand;Taisei Kogyo (Thailand) Co.,Ltd.(grant number P1451042)

摘　　要：Knowledge of the mechanical properties of two-component parts is critical for engineering functionally graded components. In this study, mono-and two-component tensile test specimens were metal injection moulded. Three different weld line positions were generated in the two-component specimens. Linear shrinkage of the two-component specimens was greater than that of the mono-component specimens because the incompatibility of sintering shrinkage of both materials causes biaxial stresses and enhances sintering. The mechanical properties of 316L stainless steel were affected by the addition of a coloured pigment used to identify the weld line position after injection moulding. For the two-component specimens, the yield stress and ultimate tensile stress were similar to those of 316L stainless steel. Because 316L and 630(also known as 17-4PH) stainless steels were well-sintered at the interface, the mechanical properties of the weaker material(316L stainless steel) were dominant. However, the elongations of the two-component specimens were lower than those of the mono-component specimens. An interfacial zone with a microstructure that differed from those of the mono-material specimens was observed; its different microstructure was attributed to the gradual diffusion of nickel and copper.Knowledge of the mechanical properties of two-component parts is critical for engineering functionally graded components. In this study, mono-and two-component tensile test specimens were metal injection moulded. Three different weld line positions were generated in the two-component specimens. Linear shrinkage of the two-component specimens was greater than that of the mono-component specimens because the incompatibility of sintering shrinkage of both materials causes biaxial stresses and enhances sintering. The mechanical properties of 316L stainless steel were affected by the addition of a coloured pigment used to identify the weld line position after injection moulding. For the two-component specimens, the yield stress and ultimate tensile stress were similar to those of 316L stainless steel. Because 316L and 630(also known as 17-4PH) stainless steels were well-sintered at the interface, the mechanical properties of the weaker material(316L stainless steel) were dominant. However, the elongations of the two-component specimens were lower than those of the mono-component specimens. An interfacial zone with a microstructure that differed from those of the mono-material specimens was observed; its different microstructure was attributed to the gradual diffusion of nickel and copper.

关 键 词：co-meal injection MOULDING 316L STAINLESS STEEL 630 STAINLESS STEEL joining position tensile deformation 

分 类 号：TG306[金属学及工艺—金属压力加工]