A method for inducing high hardness and high wear resistance gradient structure 60NiTi alloy by laser quenching
By laser hardening of 60NiTi alloy under medium temperature aging to construct a gradient structure, the problems of high hardness but poor superelasticity after high temperature solution treatment and low hardness and poor wear resistance after medium temperature aging treatment are solved. This achieves a combination of high hardness, high wear resistance and high impact resistance, significantly improving the surface hardness and friction performance of the alloy while maintaining superelasticity.
CN119144913BActive Publication Date: 2026-07-03HARBIN INST OF TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Filing Date
- 2024-09-14
- Publication Date
- 2026-07-03
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Figure CN119144913B_ABST
Abstract
The application provides a method for inducing a high-hardness and high-wear-resistance gradient structure 60NiTi alloy by laser quenching, and relates to the technical field of high-nickel NiTi alloy processing. The application adopts laser quenching to perform surface treatment on a medium-temperature aging 60NiTi alloy, constructs a gradient structure, and mainly takes TiNi phase and Ni3Ti phase in the interior to maintain good superelasticity of the alloy to bear high stress overload impact, and mainly takes Ni4Ti3 phase and TiNi phase in the surface layer to obtain high hardness and high wear resistance, so that the surface superhard layer is obtained while the superelasticity is maintained, and the high wear resistance of the alloy surface layer and the high stress impact resistance of the alloy core are well combined.
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