Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Stress Relieving Heat Treatment on Tensile and Impact Toughness Properties of AISI 316L Alloy Manufactured by Selective Laser Melting Process

선택적 레이저 용융 공정으로 제조된 AISI 316L 합금의 인장 및 충격 인성 특성에 미치는 응력 완화 열처리의 영향

  • Yang, Dong-Hoon (Department of Materials Science and Engineering, Inha University) ;
  • Ham, Gi-Su (Department of Materials Science and Engineering, Inha University) ;
  • Park, Sun-Hong (Technical Research Laboratory, POSCO) ;
  • Lee, Kee-Ahn (Department of Materials Science and Engineering, Inha University)
  • 양동훈 (인하대학교 신소재공학과) ;
  • 함기수 (인하대학교 신소재공학과) ;
  • 박순홍 (포스코 기술연구원) ;
  • 이기안 (인하대학교 신소재공학과)
  • Received : 2021.06.17
  • Accepted : 2021.07.08
  • Published : 2021.08.28
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Abstract

In this study, an AISI 316 L alloy was manufactured using a selective laser melting (SLM) process. The tensile and impact toughness properties of the SLM AISI 316 L alloy were examined. In addition, stress relieving heat treatment (650℃ / 2 h) was performed on the as-built SLM alloy to investigate the effects of heat treatment on the mechanical properties. In the as-built SLM AISI 316 L alloy, cellular dendrite and molten pool structures were observed. Although the molten pool did not disappear following heat treatment, EBSD KAM analytical results confirmed that the fractions of the low- and high-angle boundaries decreased and increased, respectively. As the heat treatment was performed, the yield strength decreased, but the tensile strength and elongation increased only slightly. Impact toughness results revealed that the impact energy increased by 33.5% when heat treatment was applied. The deformation behavior of the SLM AISI 316 L alloy was also examined in relation to the microstructure through analyses of the tensile and impact fracture surfaces.

Keywords

Acknowledgement

This study was supported by Korea Institute for Advancement of Technology (KIAT) grant funded by the Korea Government (MOTIE) (P0002007, The Competency Development Program for Industry Specialist).

References

  1. S. K. Samanta, S. K. Mitra and T. K. Pal: Mater. Sci. Eng. A, 430 (2006) 242. https://doi.org/10.1016/j.msea.2006.05.063
  2. T. Hryniewicz, R. Rokicki and K. Rokosz: Surf. Coat. Technol., 202 (2008) 1668. https://doi.org/10.1016/j.surfcoat.2007.07.067
  3. E. Paffumi, K. F. Nilsson and N. G. Taylor: Int. J. Press. Vessels Pip., 85 (2008) 798. https://doi.org/10.1016/j.ijpvp.2008.06.002
  4. J. P. Kruth, L. Froyen, J. V. Vaerenbergh, P. Mercelis, M. Rombouts and B. Lauwers: J. Mat. Proc. Tech., 149 (2004) 616. https://doi.org/10.1016/j.jmatprotec.2003.11.051
  5. L. Thijs, F. Verhaeghe, T. Craeghs, J. V. Humbeeck and J. P. Kruth: Acta Mater., 58 (2010) 3303. https://doi.org/10.1016/j.actamat.2010.02.004
  6. B. Vandenbroucke and J. P. Kruth: Rap. Proto. J., 13 (2007) 196. https://doi.org/10.1108/13552540710776142
  7. D. Herzog, V. Seyda, E. Wycisk and C. Emmelmann: Acta Mater., 117 (2016) 371. https://doi.org/10.1016/j.actamat.2016.07.019
  8. J. P. Kruth, P. Mercelis and J. V. Vaerenbergh: Rap. Proto. J., 11 (2005) 26. https://doi.org/10.1108/13552540510573365
  9. I. Tolosa, F. Garciandia, F. Zubiri, F. Zapirain and A. Esnaola: Int. J. Adv. Manuf. Technol., 51 (2010) 639. https://doi.org/10.1007/s00170-010-2631-5
  10. R. Li, Y. Shi. Z. Wang, L. Wang, J. Liu and W. Jiang: Appl. Surf. Sci., 256 (2010) 4350. https://doi.org/10.1016/j.apsusc.2010.02.030
  11. B. Zhang, L. Dembinski and C. Coddet: Mater. Sci. Eng. A, 584 (2013) 21. https://doi.org/10.1016/j.msea.2013.06.055
  12. I. Yadroitsev, P. Krakhmalev, I. Yadroitsava, S. Johansson and I. Smurov: J. Mat. Proc. Tech., 213 (2013) 606. https://doi.org/10.1016/j.jmatprotec.2012.11.014
  13. M. Sergio, F. Lima and S. Sankare: Mater. Des., 55 (2014) 526. https://doi.org/10.1016/j.matdes.2013.10.016
  14. W. Shifeng, L. Shuai, W. Qingsong, C. Yan, Z. Sheng and S. Yusheng: J. Mat. Proc. Tech., 214 (2014) 2660. https://doi.org/10.1016/j.jmatprotec.2014.06.002
  15. B. Song. S. Dong. Q. Liu, H. Liao and C. Coddet: Mater. Des., 43 (2014) 727.
  16. P. Mercelis and J. P. Kruth: Rap. Proto. J., 12 (2006) 254. https://doi.org/10.1108/13552540610707013
  17. E. Yasa and J. P. Kruth: Procedia Eng., 19 (2011) 389. https://doi.org/10.1016/j.proeng.2011.11.130
  18. S. G. Chowdhury, S. Das and P. K. De: Acta Mater., 53 (2005) 3951. https://doi.org/10.1016/j.actamat.2005.05.006
  19. J. Y. Huang, J. J. Yeh, S. L. Jeng, C. Y. Chen and R. C. Kuo: Mater. Trans., 47 (2006) 409. https://doi.org/10.2320/matertrans.47.409
  20. ASTM, A276, American Society for testing and materials, U. S. A. (2004).