Effect of Dynamic Strain Aging on the Mechanical Performance in Ti/STS439 Clad Materials

Abstract:

The effect of dynamic strain aging on the mechanical performance of Ti/STS439 clad material produced by hot rolling process was studied. A reaction layer with the thickness of approximately 3㎛ was formed during hot roll bonding process. The total elongation to fracture attains minimum values at about 400oC. The decrease of the ductility was accompanied by stress serrations in the stress-strain curves. At 400 oC, highly ductile and localized fracture with pin-point fracture surface occurred, suggesting the ductility minimum at 400 oC is extreme strain localization in the necked region due to low strain rate sensitivity

• Periodical: Advanced Materials Research (Volume 683)
• Pages: 120-123
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.683.120
• Online since: April 2013
• Authors: Jong Su Ha, In Kyu Kim, Sun Ig Hong
• Keywords: Clad Material, Dynamic Strain Aging (DSA), Roll Bonding, Ti/STS439

References

[1] W.S. Miller, L. Zhuang, J. Bottema, A. J. Wittebrood, P. D. Smet, A. Haszler, and A. Vieregge, Mater. Sci. Eng. A. Vol. 280, (2000), p.37.

DOI: 10.1016/s0921-5093(99)00653-x

[2] H. D. Manesh and A. K. Taheri, Mater. Design. Vol. 24 (2003), p.617.

[3] T. Chang, M. Hon, M. Wang, J. Alloy Compd. Vol. 331 (2009), p.408.

[4] Y. M. Hwang, H. H. Hso, and H. J. Lee, Int. J. Mech. Sci. Vol. 37 (1995), p.297.

[5] P. C. Tortorici, M. A. Dayananda, Mater. Sci. Eng. A. Vol. 244 (1998), p.207.

[6] H. D. Manesh and A. K. Taheri, J. Alloys Comp. Vol. 361 (2003), p.138.

[7] J. E. Lee, D. H. Bae, W. S. Chung, K. H. Kim, J. H. Lee, and Y. R. Cho, J. Mater. Process. Technol. Vol. 187-189 (2007), p.546.

[8] S. I. Hong, W. S. Ryu, C. S Rim, J. Nucl. Mater. Vol. 116 (1983), p.314.

[9] S. I. Hong, Mater. Sci. Eng. A, Vol. 79 (1986) p.1.

[10] S. I. Hong, Mater. Sci. Eng. A, Vol. 91 (1987) p.137.