江峰
- 教授
- 博士生导师
- 硕士生导师
- 电子邮箱：
- 所在单位：材料科学与工程学院
- 学历：博士研究生毕业
- 办公地点：
- 性别：男
- 联系方式：
- 学位：博士
- 学科：材料科学与工程
- 学科：材料科学与工程
吴亚科副教授关于Cr在爆炸焊接CuNiSi合金中对于组织和性能影响的工作在 MSEA杂志发表！完善了通过爆炸焊接实现宏观增材制造技术。
- 发布时间：2025-09-07
- 文章标题：吴亚科副教授关于Cr在爆炸焊接CuNiSi合金中对于组织和性能影响的工作在 MSEA杂志发表！完善了通过爆炸焊接实现宏观增材制造技术。
- 内容：The role of Cr-stabilized nickel silicide in abnormal microstructure andmechanical properties evolution of explosively-welded and recrystallizedCuNiSiCr alloy compositeYake Wu, Xiaogang Wu, Feng Jiang ⁎State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, ChinaA B S T R A C TEmerging oversized components in various high-end equipments require manufacturing revolution. To meet thisdemand, microstructure and property evolution of an explosively-welded CuNiSiCr alloy composite is investigated by cold rolling and recrystallizing towards building new additive-manufacturing approach. After rolling,macroscopic defects like solidifying pores in the interface are removed without forming new cracks, showinggood treatment-bearing capability. During recrystallization, the rolled composite has the microstructure fullytransformed and becomes a monomer extended plate, but the recrystallization is abnormally delayed in the inter facial molten zones. Analysis into the cold-rolled composite recrystallized at 900 °C for 1 h relates the sluggishrecrystallization to pinning from the Cr-stabilized Ni31Si12 phase with an average size of 34 nm evolved duringwelding and recrystallizing. Moreover, this recrystallized composite shows a yield strength of 223 MPa, twice ofthat of the initial parent material (105 MPa) quantitatively due to the enhanced strengthening from mostly theresidual high-density dislocations and partly the refined grains, and is still suitable for next welding and can besoftened using the increased recrystallizing temperature and time. A macroscopic additive manufacturing is proposed accordingly and takes shape of alternatively explosive welding, cold deforming and recrystallizing of smallsheets to make the oversized components.致谢This work was supported by the National Natural Science Founda tion of China (Grant Nos. 52101149, 92166102 and 92366301), the In novation Capability Support Program of Shaanxi (Program No. 2024CX-GXPT-20), the China Postdoctoral Science Foundation (Grant No. 2023M742763 and 2024T170716) and the Postdoctoral Research Project of Shaanxi Province. Thanks were also due to Zhengzhou Yuguang Clad Metal Materials Co., Ltd for helping conduct the explo sive welding experiments. Yake Wu wanted to appreciate support from Instrument Analysis Center of XJTU with respect to the SEM tests.