Wear and Mechanical Properties of Fe-28Al and Fe-28Al-10Ti Alloys

Abstract:

Fe-28Al and Fe-28Al-10Ti alloys were prepared by mechanical alloying and hot pressed sintering. The mechanical properties and wear resistance were studied. The results show that Fe-28Al bulk material is mainly characterized by the low ordered B2 Fe₃Al structure with some dispersed Al₂O₃ particles. The mechanical properties such as the hardness and strength of Fe-28Al-10Ti are significantly improved compared with Fe-28Al, which is attributed to the grain refinement and solid solution reinforcing with the addition of Ti element. The fracture mode is mainly the intergranular fracture. Fe-28Al-10Ti exhibits more excellent wear resistance than Fe-28Al, especially after long distance sliding wear test. There is difference in wear mechanisms of Fe-28Al and Fe-28Al-10Ti alloys. Under the load of 100N, there is obvious plastic deformation on the worn surface of Fe-28Al. Micro-crack and layer splitting occur on the 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.

• Periodical: Advanced Materials Research (Volumes 295-297)
• Pages: 256-259
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.295-297.256
• Online since: July 2011
• Authors: Jing Li, Jin Shan Zhao
• Keywords: Fe-Al, Mechanical Property, Wear Resistance

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