通过局部激光冲击强化协同提高激光直接能量沉积 Ti60 接头的强度和塑性

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-03-24 DOI:10.1016/j.msea.2025.148255

Yongxin Zhang , Wei Guo , Hongyu Zhang , Peipei Han , Shijian Li , Jinbin Zhao , Zhanbo Cui , Ying Zhu , Hongqiang Zhang

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引用次数: 0

摘要

本研究采用激光直接能量沉积（LDED）和激光冲击强化（LSP）复合方法修复Ti60合金。结果表明：在LDEDed接头中，从衬底区（SZ）到热影响区（HAZ）和激光沉积区（LDZ），球形αp相溶解，簇状αs片层转变为编织α板；这些微观结构差异导致SZ成为弱强度侧，主导了LDEDed接头的拉伸性能。仅在SZ侧进行LSP处理，提高了SZ的抗拉强度，激活了LDZ固有的塑性变形能力，从而实现了修复Ti60零件强度和塑性的协同增强。

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Synergistic enhancement of strength and plasticity for laser direct energy deposited Ti60 joint by locally applied laser shock peening

This study employed a composite method of laser direct energy deposition (LDED) and laser shock peening (LSP) to repair Ti60 alloy. The results showed that the spherical α_p phase dissolved and the clustered α_s lamellae transform into basketweave α plates from the substrate zone (SZ) to heat affected zone (HAZ) and laser deposition zone (LDZ) in the LDEDed joint. These microstructure differences resulted in the SZ becoming the weak strength side, dominating the tensile properties of the LDEDed joint. LSP treatment was performed only on the SZ side, improving the tensile strength of the SZ and activating the inherent plastic deformation capabilities of the LDZ, thereby achieving a synergistic enhancement of the strength and plasticity of the repaired Ti60 parts.

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来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.