한국분말재료학회지 (Journal of Powder Materials)

  • 제9권4호
  • /
  • Pages.218-226
  • /
  • 2002
  • /
  • 2799-8525(pISSN)
  • /
  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
권호 표지
DOI QR코드

DOI QR Code

수분무 STS 316L 분말사출성형체의 탈지 및 소결공정에 따른 인장 특성

Effect of Debinding and Sintering Conditions on the Tensile Properties of Water-atomized STS 316 L Parts by Powder Injection Molding

  • 윤태식 (베스너 주식회사) ;
  • 성환진 (포항산업과학연구원, 재료공정연구센타) ;
  • 안상호 (포항산업과학연구원, 재료공정연구센타) ;
  • 이종수 (포항공과대학교, 항공재료연구센타)
  • 발행 : 2002.08.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The purpose of the present study is to investigate the influence of thermal debinding and sintering conditions on the sintering behavior and mechanical properties of PIMed 316L stainless steel. The water atomized powders were mixed with multi-component wax-base binder system, injection molded into flat tensile specimens. Binder was removed by solvent immersion method followed by thermal debinding, which was carried out in air and hydrogen atmospheres. Sintering was done in hydrogen for 1 hour at temperatures ranging from 1000℃ to 1350℃ The weight loss, residual carbon and oxygen contents were monitored at each stage of debinding and sintering processes. Tensile properties of the sintered specimen varied depending on the densification and the characteristics of the grain boundaries, which includes the pore morphology and residual oxides at the boundaries. The sinter density, tensile strength (UTS), and elongation to fracture of the optimized specimen were 95%, 540 MPa, and 53%, respectively.

키워드

참고문헌

  1. A. Bose: JOM, 47 (1995), 26.
  2. R.M.German: Powder Injection Molding, MPIF, Princeton, NJ(1990).
  3. Y.Kato, K. Nakabayashi and T. Shimura: MPR, 48 (1993) 32.
  4. H.Suzuki and H.Ohtsubo: MPR, 49 (1994) 28.
  5. A.Bose: MPR, 48 (1993) 18.
  6. H.Cohrt, M. Enders, and L. Kramer: PIM Symposium, MPIF, Princeton, NJ (1992) 471.
  7. G.R.White and R. M. German: Adv. in Powder Metallurgy and Particulate Materials 1994, 4, MPIF, Princeton, NJ(1994) 185.
  8. M. Bloemacher and D. Weinand: PIM Symposium, MPIF, Princeton, NJ (1992) 99.
  9. P.K. Minuth, P. Kunert, D. Meinhardt, F. Petzoldt and G. Veltl: Adv. in Powder Metallurgy and Particulate Materials 1995, 3-part 11, MPIF, Princeton, NJ (1995) 65.
  10. L.Cai and R.M. German: Int. J. Powder Metall., 31 (1995) 257.
  11. S.T.Lin and R. M. German: pmi, 21 (1989) 19.
  12. D.F. Ferris: Int. J. Powder Metall. and Powder Tech., 19 (1983) 11.
  13. P. Bracconi and G. Gasc: Metall. Mater. Trans. A, 25A (1994) 509. https://doi.org/10.1007/BF02651592
  14. C. Lall: Int. J. Powder Metall., 27 (1991) 315.
  15. MPIF Standard #35.
  16. G. Bockstiegel and C. -A. Blande: Proc. 4th PM Int. Conf., Zakopane, Poland, 2 (1975) 233.
  17. E.O. Hall: Proc. Phys. Soc. London, B64 (1951) 747 https://doi.org/10.1088/0370-1301/64/9/303
  18. N. J. Petch: J. Iron Steel lnst., 174 (1953) 25.
  19. L.A. Nordstrom: Met. Sci., 11 (1977) 208. https://doi.org/10.1179/msc.1977.11.6.208
  20. A.L. Gurson: J. Eng. Mater. Technol. (Trans. ASME), 99 (1977) 2. https://doi.org/10.1115/1.3443401