An integrated additive manufacturing method of a titanium-steel multi-material component

By using a combination of DED and SLM processes, the forming challenge of titanium-steel heterogeneous components has been solved, enabling high-strength and high-efficiency integrated manufacturing of titanium-steel multi-materials, suitable for efficient mass production of complex structures.

CN122400587APending Publication Date: 2026-07-17BEIJING YUDING ADDITIVE MFG RES INST CO LTD
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Patent Information

Application Number
CN202610706461.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies cannot simultaneously meet the integrated manufacturing requirements of complex titanium-steel heterogeneous components, such as formability, high interfacial bonding strength, absence of brittle phases, low residual stress, and high efficiency and low cost. In particular, there are difficulties in the preparation of complex internal cavities, variable cross sections, and gradient functional structures.

Method used

By employing a combined DED and SLM process, segmented temperature control and interface leveling, along with graded heat input regulation and optimized forming strategy, titanium-steel multi-metal integrated forming is achieved, suppressing brittle intermetallic compounds such as FeTi and improving the interfacial bonding strength and stability.

Benefits of technology

It achieves efficient and reliable forming of titanium-steel multi-material components, with excellent material interface properties, high interface bonding strength, reduced residual stress, and high yield. It is suitable for near-net-shape forming of complex structures, has strong adaptability, and is suitable for efficient mass production.

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Abstract

本发明涉及钛‑钢多材料增材制造技术领域,具体为一种钛‑钢多材料构件的一体化增材制造方法。本发明采用激光定向能量沉积(DED)与激光选区熔化(SLM)复合工艺制备钛‑钢多材料增材,通过界面结构设计、过渡层调控、热输入精准匹配与精密后处理,实现钛‑钢异质界面无脆性相、无裂纹、高结合强度的一体化成形,尤其适用于航空航天、国防军工、先进武器装备等领域对轻量化、高结构强度、高界面可靠性、复杂整体构型构件的制造需求。
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