Local enhancement of the material properties of aluminium sheets by a combination of additive manufacturing and friction stir processing. Issue 1 (2019)

• Record Type: Journal Article
• Authors: Mondal, Mounarik; Das, Hrishikesh; Hong, Sung-Tae; Jeong, Byeong-Seok; Han, Heung Nam
• Is Part Of: CIRP annals. Volume 68:Issue 1(2019)
• Page Start: 289
• Page End: 292
• Publication Date: 2019
• Subjects: Friction stir welding -- Additive manufacturing -- Heterogeneous microstructures; Production engineering -- Research -- Periodicals; 670.5
• DOI: 10.1016/j.cirp.2019.04.109
• Languages: English
• ISSNs: 0007-8506

Abstract

Abstract: Friction stir processing (FSP) is combined with additive manufacturing (AM) with selective laser melting to locally enhance the material properties of a metallic part. A groove inside aluminium 1060 alloy sheet is filled with an aluminium 7075 alloy powder by AM. FSP is then applied to the AMed region along the groove. The suggested technique creates a heterogeneous microstructure with alternating reinforcement-enriched and matrix-enriched regions. While the overall hardness of the stir zone (SZ) increases significantly, the heterogeneous microstructure results in a unique uneven hardness distribution in the SZ. Tensile tests confirm the effectiveness of the suggested technique.