Effect of laser path overlap on surface roughness and hardness of layer in laser cladding. (October 2015)

• Record Type: Journal Article
• Authors: Tanigawa, D.; Abe, N.; Tsukamoto, M.; Hayashi, Y.; Yamazaki, H.; Tatsumi, Y.; Yoneyama, M.
• Is Part Of: Science and technology of welding & joining. Volume 20:Number 7(2015:Oct.)
• Publication Date: 2015-10
• Subjects: Diode laser, -- Flat-top beam profile, -- Laser cladding, -- Overlap ratio, -- Surface roughness, -- Vickers hardness; Welding -- Periodicals; Joints (Engineering) -- Periodicals; Surfaces (Technology) -- Periodicals; 671.52
• DOI: 10.1179/1362171815Y.0000000044
• Languages: English
• ISSNs: 1743-2936

Abstract

Abstract : A Ni–Cr–Si–B alloy coating was produced on a type 304 stainless steel plate by laser cladding. A diode laser with a flat-top beam profile was used in this experiment. The effects of focused laser spot overlap on surface roughness (Ra) and Vickers hardness were investigated. Ra and the Vickers hardness of the cladding layers decreased as the overlap ratio increased. Cladding layers that maintained a hardness comparable to that of the source powder material were produced at overlap ratios of < 70%.