FABRICATION OF AZ91/SiO, NANO COMPOSITE BY FRICTION STIR PROCESSING AND INVESTIGATION OF MICROSTRUCTURE AND MECHANCAL PROPERTIES OF THE COMPOSITE

سال انتشار: 1390
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 404

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شناسه ملی سند علمی:

UFGNSM03_092

تاریخ نمایه سازی: 10 تیر 1396

چکیده مقاله:

In this research, Friction Stir Processing was employed to fabricate composite layer on as-cast AZ91 magnesium alloy by using two different grain sizes of SiO2 particles (5 micro and 10 Nano meters). The effects of common FSP process parameters such as traverse speed, pass number and grain size on the microstructural and mechanical properties of the composite layer was investigated. Microstructural analysis was done by optical microscopy (OM) and scanning electron microscopy (SEM). FSP produces a homogeneous microstructure. Results show a considerable improvement in the microstructural and mechanical characteristics of the FSPed zone as a result of much grain refinement and pinning effect of nano-SiO, particles as compared to those of the base metal. Micro hardness studies also show that hardness in the stir Zone (SZ) increases by almost 1.5 times, from 66 to 93 HV.

نویسندگان

D. KHAYYAMIN

Department of MechanicalEngineering,TabrizUniversity,Tabriz,EastAzarbaijan, Iran

A MOSTAFAPOUR

Department of Mechanical Engineering, Tabriz University, Tabriz, East Azarbaijan, Iran

S.T. KHANDAN

Department of Mechanical Engineering, Tabriz University, Tabriz, East Azarbaijan, Iran