Effects of Spray Forming and Aging Treatment on the Microstructures and Hardness of H13 Tool Steel

Abstract:

The microstructures and hardness of spray-formed and aged H13 steel were investigated by OM, SEM, XRD and hardness tester. Compared to the as-cast H13 steel, the microstructures of the spray-formed H13 steel is characterized by lower bainite, martensite and much more retained austenite, inducing lower hardness than the as-cast H13. The peak aging temperature for the spray-formed H13 steel is 50°C higher than the commercial H13 steel (500°C) for their different microstructures. After aged at 550°C for 50h, a much higher hardness (about 53 HRC) can be retained in the spray-formed H13 steel, showing an excellent thermal stability at 550°C.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 405-410
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.405
• Online since: December 2012
• Authors: Jin Xiang Zhang, He Bin Wang, Lin Lu, Jin Feng Huang, Hua Cui, Ji Shan Zhang
• Keywords: Aging, H13 Tool Steel, Hardness, Microstructure, Spray Forming

References

[1] P.S. Grant: Prog. Mater. Sci. Vol. 139 (1995), pp.497-545.

[2] E.J. Lavernia, Y. Wu: Spray Atomization and Deposition, edited by J. Wiley and Sons, New York, NY (1996).

[3] ASM International Handbook Committee: Properties and Selections: Irons, Steel, and High Performance Alloys, Metals, Handbook. Metals Park: ASM, (1990).

DOI: 10.31399/asm.hb.v01.9781627081610

[4] K.M. McHugh, J.E. Folkestad: Proceedings of SDMA 2003 and ICSF V, Bremen, Germany (2003), pp.5-123.

[5] K.M. McHugh, S.P. Marsh, J.A. Dantzig, R. Trivedi, W. Hofmeister, M.G. Chu, E.J. Lavernia J.H. Chun, (eds. ): Solidification 1998, TMS, Warrendale, PA (1998).

[6] E.S. Lee, W.J. Park, K.H. Baik, and S. Ahn: Scripta Mater. Vol. 39 (1998), p.1133.

[7] Y.J. Lin, K.M. McHugh, Y.Z. Zhou, E.J. Lavernia: Scripta Mater. Vol. 55 (2006), pp.581-584.

[8] Z.C. Liu, Z.W. Du, W.F. Zhu, D.K. Cao: Ordnance Mater. Sci. Eng. Vol. 24 (2001), pp.11-13 (In Chinese).