Microstructure and Mechanical Properties of Vacuum Sintered Austenitic Stainless Steel Parts

Abstract:

This work presents the possibility of obtaining high density austenitic stainless steel parts by powder metallurgy (PM) and sintered in vacuum. Mechanical properties such as tensile strength, yield stress, elongation rate and Vickers hardness were measured by using a tensile testing machine and a Vickers hardness tester at room temperature. Microstructural characterization was performed by means of optical microscopy and scanning electron microscopy (SEM). The effect of sintering temperature on densification and mechanical properties of PM austenitic stainless steel has been investigated. The results show that density and mechanical properties were increased with the increase of sintering temperature, but when the sintering temperature is above 1340 °C, they increased slowly. The highest mechanical properties were obtained when sintering temperature was 1340 °C.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 915-920
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.915
• Online since: November 2010
• Authors: Shao Jiang Lin, Da Peng Feng, Qi Nian Shi
• Keywords: Densification, Mechanical Property, Powder Metallurgy (PM), Stainless Steel (SS)

References

[1] W. B. James, G. T. West. ASM International. Vol. 07 (2002), pp.751-768.

[2] C. J. Novak: Handbook of Stainless Steels (McGraw-Hill, New York 1977).

[3] Mohamed Imbaby, Kyle Jiang and Isaac Chang. Mater. Lett. Vol. 62 (2008), pp.4213-4216.

[4] P. Lindskog, Powder Metall. Vol. 47 (2004), pp.6-9.

[5] C. Padmavathi, A. Upadhyayaa and D. Agrawal. Scripta Mater. Vol. 57 (2007), pp.651-654.

[6] E. Klar, P.K. Samal: Powder Metallurgy Stainless Steels: Processing, Microstructures, and Properties (ASM, Materials Park, OH 2007).

DOI: 10.31399/asm.tb.pmsspmp.9781627083126

[7] J. Jain, A. M. Kar and Anish Upadhyaya. Mater. Lett. Vol. 58 (2004), p.2037-(2040).

[8] S. L. Li, B. Y. Huang and Y. M. Li. Cent South Univ Echnol. Vol. 01( 2003 ), pp.1005-9784.

[9] F. Meng, S. J. Guo and H. Zhang. Materials Science and Engineering of Powder Metallurgy. Vol. 11(2006), pp.341-344.

[10] F. Velasco, Metal Powder Report. Vol. 53(1)(1998), pp.35-36.

[11] Sharon, D. Itzhak. Mater. Sci. Eng. A. Vol. 157(1992), pp.145-149.

[12] Tiziani, A. Molinari and L. Fedrizzi. Powder Metall. Vol. 32(2) (1989), pp.118-122.

[13] K. V. Sudhakar. Inter. J. Fatigue. Vol. 22 (2000), pp.729-734.

[14] Howard. A Kuhn, Alan Lawley: New Techniques and Analyses (New York, London 1978).

[15] Porter D. A, Easterling K. E: Phase transformations in metals and alloys (Mc Graw-Hill. NewYork 1980).

[16] R. Mehdi, E. Naser and P. Nader. J. Mater. Process. Technol. Vol. 209 (2009), pp.5387-5393.

[17] R. M. German: Sintering Theory and Practice (Wiley Interscience Publications, New York 1996).

[18] Salak, V. Miskovic and E. Dudrova. Powder Metall. Int. Vol. 6 (3) (1974), p.128.

[19] H. J. Sung, T. K. Ha and S. Ahn. Mater. Process. Technol. Vol. 130-131 (2002), pp.321-327.

[20] Z. W. Xua,C. C. Jia and C. J. Kuang. J. Alloys Compd. Vol. 484 (2009), pp.924-928.