Improvement in wear characteristics of the AISI M2 by laser cladding and melting

Abstract

Laser clad WC reinforced Ni-based intermetallic-matrix composites to improve cavitation erosion resistance Surface melting of Al-Cu-Mg alloy using a short-pulse, planar waveguide CO 2 laser for corrosion resistance improvement J. Laser Appl. 15, 233 (2003); 10.2351/1.1620005Laser cladding of cast aluminum-silicon alloys for improved dry sliding wear resistanceThe interest of high speed steel ͑HSS͒ for wood cutting tools remains very important because of their good tool edge accuracy and easy grinding. The main problem is their low resistance to both mechanical and chemical wearing. Resistance of HSS cutting tools to wearing is a primary concern in the applicability of the HSS cutting tools to a wood cutting operation. In order to increase their performance, a laser melting and cladding applied on the tool edges is presented in this paper. First, the annealed AISI M2 bar was melted, and the M2 powder was cladded onto the AISI L2 substrate by a laser beam. The microstructure and microhardness of the M2-clad and M2-melted were characterized. Second, their wear resistance was tested for cutting wood. The experimental results showed that the microstructures on the clad zone ͑CZ͒ of M2-clad and melted zone ͑MZ͒ of the M2-melted reveal fine and homogeneous iron dendritic structure, in which whole primary carbides were completely dissolved during laser cladding and melting. The energy dispersive spectroscopy ͑EDS͒ analysis indicated that the M2-clad reveals CZ microstructure with more uniform distribution of fine carbides compared to MZ microstructure. The M2-clad and M2-melted, which present almost the same microhardness, have larger microhardness compared to the M2-conventional. The results of wearing tests showed that the M2-clad and M2-melted cutting tools are better in wear resistance, edge roughness, and suffer less edge fractures than the M2-conventional peeling tool. Laser melting and cladding are considered to be valuable techniques to improve the performance of the M2 high speed steel cutting tools for wood machining application.

Uniformly Dispersed Carbide Reinforcements in the Medium-Entropy High-Speed Steel Coatings by Wide-Band Laser Cladding

“…After the triple-tempering at 530 °C, the residual austenite completely disappears and transforms to martensite. This microstructure transition is almost same as most of the previous results on the traditional Fe-C-X HSS coating prepared by laser cladding [15]. The main difference in the controllable coatings is that the dominant carbide in the M2-HSS coating is M 2 C type, but the carbide transforms to MC in the ME-HSS coating.…”

Regeneration of industrial cutting blades made from X39Cr13 steel used in skinning process of Pleuronectidae-family flatfishes

“…Similar (Fig. 2d) and other forms of wear appearing on the cutting tools in wide areas of applications were shown and discussed also in the work of Nordström and Bergström [10], Darmawan et al [11], Zhou et al [12], Ghosh at al., [13], Chayeuski et al [14], Jang et al [15] as well as in websites [16][17][18].…”

Multiphysics simulation of laser–material interaction during laser powder depositon

“…The laser cladding process is defined as the process in which laser beam is used to fuse a material which has different metallurgical properties than the substrate, whereby only a very thin layer of the substrate has to be melted in order to achieve metallurgical bonding with minimal dilution of added material and substrate so that the original properties of the coating material are maintained [2]. In practice, laser cladding makes possible to solve problems such as wear of diesel engine exhaust valves [3], wear of tools made of high speed steel [4], reparation of mold steels [5], corrosion of gas turbine blades [6], and other problems that would be impossible solving using conventional methods, like heat treatment [7].…”