Resistance of the Transitional Region of Laser-Clad Coating on Electrolytic Low Titanium Aluminium Alloys to Multiple Impact Loading

Abstract:

A multiple impact loading experiment was designed to investigate the cracking behavior in the transitional regions of laser-clad iron base alloy on an electrolytic low titanium aluminium alloys under multiple impact loading in this study. The concept of TCR (transitional crack ratio) was introduced to evaluate the crack resistance of the transitional regions to multiple impact loading (impact resistance). Results showed that the substrate temperature during laser cladding process and the scanning velocity have significant influences on the microstructure of the transitional regions and then the impact resistances of the laser-clad iron alloy coating. The laser-clad iron base alloy coatings obtained at the substrate temperature within 275 ~ 320°C displayed the best impact resistance. Furthermore, the crack mechanism in the transitional regions was analyzed.

• Periodical: Key Engineering Materials (Volumes 336-338)
• Pages: 2592-2594
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.336-338.2592
• Online since: April 2007
• Authors: Wen Yan Wang, Jing Pei Xie, A.H. Wang, Wei Li, Zhong Xia Liu
• Keywords: Impact Resistance, Iron Base Alloy Coating, Laser Cladding, Transitional Region

References

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[6] B. Babob: Welding of Aluminium and Its Alloys with Other Metals. (Beijing: Yuhang Press, 1990). Fig. 4. Network cracks formed during impact testing in the transitional region of the laser-clad iron-base alloy coating with a substrate temperature of 365-375°C.