Oxygen content control in metal injection molding of 316L austenitic stainless steel using water atomized powder

Yu，Kaiping1; Ye，Shulong1,2; Mo，Wei1; Lv，Yonghu1; Jiang，Heng1; Ma，Rui1; Kwok，Chi Tat2,3; Yu，Peng1

2020-02-01

10.1016/j.jmapro.2019.12.038

Journal of Manufacturing Processes   影响因子和分区

1526-6125

2212-4616

316 L stainless steel samples are fabricated using metal injection molding in which water atomized 316 L powder containing 4200 ppm oxygen is used as the raw material. Oxygen not only hampers the sintering process but also proves to be detrimental to the ductility and corrosion resistance of the sintered sample. It is found that when the 316 L powder is doped with small amount of graphite (0, 500, 1000, 1500 and 2000 ppm), its oxygen content can be effectively reduced via the carbon-oxygen reaction during sintering. As the carbon dosage increases from 0 to 1500 ppm, the sintered density, elongation and pitting potential of the sintered samples are effectively improved due to the decreased oxygen contents in them. However, when 2000 ppm graphite is added, the sample becomes overdosed with carbon. The excessive carbon remains in the material and forms carbon-rich particles during sintering, which has significant adverse effects on the sintering process as well as the ductility and corrosion resistance of the sintered sample.

Carbon content Corrosion resistance Ductility Metal injection molding Stainless steel

SCI ; EI

英语

第一 ; 通讯

Science, Technology and Innovation Commission of Shenzhen Municipality[SGLH20161212155758670]

Engineering

Engineering, Manufacturing

WOS:000513922000048

Elsevier Ltd

20200308032036

Chemicals removal (water treatment) ; Corrosion resistance ; Ductility ; Graphite ; Injection molding ; Metal molding ; Oxygen ; Powder metals ; Sintering ; Stainless steel ; Steel corrosion

Foundry Practice:534.2 ; Metals Corrosion:539.1 ; Steel:545.3 ; Chemical Products Generally:804 ; Materials Science:951

2-s2.0-85077742674

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Institute of Applied Physics and Materials Engineering,University of Macau,Avenida Da Universidade,Taipa,China
3.Department of Electromechanical Engineering,University of Macau,Avenida Da Universidade,Taipa,China

Yu，Kaiping,Ye，Shulong,Mo，Wei,et al. Oxygen content control in metal injection molding of 316L austenitic stainless steel using water atomized powder[J]. Journal of Manufacturing Processes,2020,50:498-509.

Yu，Kaiping.,Ye，Shulong.,Mo，Wei.,Lv，Yonghu.,Jiang，Heng.,...&Yu，Peng.(2020).Oxygen content control in metal injection molding of 316L austenitic stainless steel using water atomized powder.Journal of Manufacturing Processes,50,498-509.

Yu，Kaiping,et al."Oxygen content control in metal injection molding of 316L austenitic stainless steel using water atomized powder".Journal of Manufacturing Processes 50(2020):498-509.