Microstructural refinement of a cast hypereutectic Al–30Si alloy by friction stir processing

Ductilizing of a brittle as-cast hypereutectic Al–Si alloy by friction stir processing

“…In contrast to this, a recent novel bulk microstructural refinement technique, known as friction stir processing [12], is adopted in present work to refine the silicon particle size much below this limit. In fact, this letter is the continuation of the work by Rao et al [21,22] on microstructural refinement of cast Al-30Si by friction stir processing (FSP), to report the effect of multipass FSP on the tensile properties.…”

Influence of Multi-pass Friction Stir Processing on Microstructure and Mechanical Properties of Die Cast Al–7Si–3Cu Aluminum Alloy

“…They have also reported that the 50% overlapped multi-pass FSP did not influence the size, aspect ratio and distribution of Si particles. Rao et al [14] reported that reduction in the average size of the Si particles after one-pass FSP is 98%, which further refined to 99% after second pass. Ranjit et al [21] observed that in a two-pass FSP of Al-TiC in situ composite, the grain size was refined substantially after each FSP pass.…”

“…Nascimento et al [13] have achieved a significant increase in the formability of friction stir processed AA5083 and AA7022 alloys. Friction stir processing of hypereutectic Al-30Si alloy was studied by Rao et al [14]. They reported that two-pass FSP with 100% overlapping on the top of the first pass itself has a pronounced effect on the size, the shape and the distribution of Si particles.…”

Enhancing strength, ductility and machinability of a Al–Si cast alloy by friction stir processing

“…Friction stir processing has been identified as a novel approach to improve the surface properties of cast light weight materials like aluminum and magnesium alloys by effective microstructural modification [4][5][6][7][8][9][10][11][12]. Mishra and his coworker reported that, friction stir processing is an effective process for microstructural modification of various aluminum and magnesium alloys [13][14][15].…”