Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing. Issue 6 (8th June 2022)

• Record Type: Journal Article
• Authors: Maji, P.; Ghosh, S.K.; Nath, R.K.; Paul, P.; Meitei, R.K.B.
• Is Part Of: Materialwissenschaft und Werkstofftechnik. Volume 53:Issue 6(2022)
• Page Start: 705
• Page End: 722
• Publication Date: 2022-06-08
• Subjects: Metal matrix composites -- friction stir processing -- mechanical behavior -- wear -- corrosion; Metallmatrix-Verbundwerkstoffe -- Rührreibverfahren -- mechanisches Verhalten -- Verschleiß -- Korrosion; Materials -- Periodicals; Materials -- Testing -- Periodicals; 620.1
• DOI: 10.1002/mawe.202100147
• Languages: English
• ISSNs: 0933-5137

Abstract

Abstract: Aluminum matrix composites are widely used for making structural components in the aerospace and automobile industries. In order to sustain the operational demand, excellent anti‐wear and corrosion resistance properties are required in the composites. To achieve this, molybdenum disulfide and cerium dioxide reinforced hybrid aluminum‐based composites are fabricated by friction stir processing at different rotational speed and number of passes. Due to grain refinement and better particle distribution at high rotational speed and 2 pass, tensile strength and microhardness improves by sacrificing ductility. However, deterioration of mechanical properties than the as‐received alloy is evident in all the composites due to dissolvement of strengthening precipitates. With increasing tool rotational speed, severe adhesion type of wear shifts to abrasion wear and the wear resistance also improves. All the composites show similar corrosion behavior as the unprocessed alloy. However, the corrosion parameters such as corrosion potential and corrosion current density were influenced by processing conditions. The composite produced with 1500 min −1 and 2 pass exhibits highest wear and corrosion resistance. Abstract : Friction stir processing was used to produce novel hybrid aluminum matrix composites with good wear and corrosion resistance properties and sufficient mechanical strength. A schematic view of a fabricated hybrid composite and the characterization specimens are given. Also, some characterization results of the composites are presented to understand the behavior of the produced composites.