Surface Alloying of Aluminum Alloy (Lm4) With Iron Powder using Tig Welding
Purushottam Sahu1, Santosh Kumar Mishra2, Shatendra Kumar Sahu3

1Purushottam Sahu, Student, Department of Mechanical Engineering, Production Engineering, BIT Durg (C.G.), India.
2Santosh Kumar Mishra, Assistant Professor, Department of Mechanical Engineering, Production Engineering BIT Durg (C.G.), India.
3Shatendra Kumar Sahu, Assistant Professor, Department of Mechanical Engineering, Production Engineering BIT Durg (C.G.), India.

Manuscript received on 13 April 2017 | Revised Manuscript received on 20 April 2017 | Manuscript Published on 30 April 2017 | PP: 46-52 | Volume-6 Issue-4, April 2017 | Retrieval Number: D4892046417/17©BEIESP
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Abstract: Development of Fe–Al composite layer by utilizing combination surface alloying process with blend of Al and Fe powders has been examined to enhance the surface hardness of cast aluminum amalgam LM4, business Al–Si compound substrate. Tungsten Arc welding procedure is utilized to adjust the surface. Components, for example, welding current, welding speed, terminal to work separation are changed to the composite the surface of LM4 with preplaced press covering on the substrate at different levels of welding current (3-6mm/sec) and cathode to work remove (2-3mm) in the argon gas protecting. The microstructure of the alloyed layer changed with expanding Fe content from hypo-eutectic structure to hyper-eutectic structure. Hardness of the surface changed LM4 combination shifts from HV98.96 to HV141.9 as for the elements chose and their levels [25]. The alloyed examples with low warmth input demonstrates high hardness when terminal to work separation is kept steady, as the cathode to work remove increments small scale hardness additionally increments. The greatest increment in hardness is 40.25% accomplished at Welding current 100A, welding speed 5mm/sec, Electrode to work separate 3mm because of the best possible dissemination of iron particles into the substrate bringing about the arrangement of Al-Fe intermetallic.
Keywords: HV98.96 to HV141.9, LM4, Utilizing Combination, (3-6mm/sec), Intermetallic.

Scope of the Article: Welding Technology