4341E high-speed steel and preparation method thereof
By using specific alloy compositions and precise metallurgical processes, nitrogen-titanium-boron microalloying is introduced to refine grains and strengthen grain boundaries, solving the problems of brittle fracture and insufficient red hardness of traditional 4341 high-speed steel. This achieves a balance between high hardness and high toughness, and reduces production costs.
Patent Information
- Application Number
- CN202610234186.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-27
- Publication Date
- 2026-06-12
AI Technical Summary
During the solidification process, traditional 4341 high-speed steel is prone to micro-segregation of alloying elements, resulting in coarse carbide networks that disrupt the continuity of the austenite matrix, leading to brittle fracture and insufficient red hardness. Furthermore, the addition of expensive alloys increases costs, and existing microalloying technologies struggle to achieve both high hardness and high toughness.
By employing a specific alloy composition design and introducing nitrogen-titanium-boron ternary microalloying synergistic regulation, combined with induction melting, ladle refining and electroslag remelting processes, the addition and distribution of trace elements are precisely controlled through in-situ synergistic grain refinement of Ti-N and grain boundary strengthening of boron. In conjunction with multi-directional forging and heat treatment processes, the grains are refined, carbides are dispersed and grain boundaries are strengthened.
It significantly improves the strength, toughness, and red hardness of 4341E high-speed steel, solves the performance bottleneck of traditional 4341 high-speed steel, achieves a balance between high hardness and high toughness, and reduces production costs.