Where did laser hardening and melting improved the mechanical properties of materials?
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Laser hardening and melting have been shown to improve the mechanical properties of materials in various studies. Laser surface remelting has been found to enhance corrosion resistance, microhardness, wear resistance, fatigue strength, and tensile strength of materials . Heat treatments, such as aging treatment and direct aging treatment, have been found to improve the strength of laser-melted nickel-based superalloys . In-situ heat treatment during laser melting deposition has been shown to greatly enhance the strength and ductility of repaired parts made of precipitation-hardened steel . Post-heat treatment nitrogen dissolution has been found to enhance the ductility of selective laser melted Ti-based materials . The use of interlayer pause strategy during laser melting deposition has been demonstrated to improve the mechanical properties of laser-additively manufactured aluminum alloys, including yield strength and elongation .
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