Dry Sliding Wear Behavior of Hot Pressed Fe-28Al and Fe-28Al-10Ti Alloys

Abstract:

Fe-28Al and Fe-28Al-10Ti alloys were prepared by mechanical alloying and hot pressing. The phases and dry sliding wear behavior were studied. The results show that Fe-28Al bulk materials are mainly characterized by the low ordered B2 Fe₃Al structure with some dispersed Al₂O₃ particles. Fe-28Al-10Ti exhibits more excellent wear resistance than Fe-28Al, especially after long distance sliding wear test. There are obvious differences in wear mechanisms of Fe-28Al and Fe-28Al-10Ti alloys under different testing conditions. Under the load of 100N, there is plastic deformation on the worn surface of Fe-28Al. The main wear performance of Fe-28Al-10Ti is particle abrasion, the characteristics of which are micro cutting and micro furrows, but micro-crack and layer splitting begin to form on the surface of Fe-28Al. Under the load of 200N, serious plastic deformation and work-hardening lead to rapid crack propagation and eventually the fatigue fracture of Fe-28Al. Plastic deformation is the main wear mechanism of Fe-28Al-10Ti under the load of 200N, which are characterized by micro-crack and small splitting from the worn surface.

• Periodical: Advanced Materials Research (Volumes 306-307)
• Pages: 425-428
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.306-307.425
• Online since: August 2011
• Authors: Jing Li, Xiao Hong Fan, De Ming Sun
• Keywords: Fe-Al, Hot-Pressing, Wear Mechanism, Wear Resistance

References

[1] N.S. Stoloff, C.T. Liu and S.C. Deevi: Intermetallics Vol. 8 (2000), p.1313

[2] S.M. Zhu, T. Makoto and S. Kazushi: Mater. Sci. and Eng. A Vol. 292 (2000), p.83

[3] H.E. Maupin, R.D. Wilson and J.A. Hawk: Wear Vol. 59 (1992), p.241

[4] D.E. Alman, J.A. Hawk and J.H. Tylczak: Wear Vol. 251 (2001), p.875

[5] X.S. Guan, K. Iwasaki and K. Kishi: Mater. Sci. and Eng. A Vol. 366 (2004), p.127