摘要: |
对电子束增材制造技术成形TC11钛合金工艺进行研究,探索“增材+锻造”复合制造大型钛合金构件的更优工艺。使用改造设备开展正交试验,优化工艺。结果表明:束流20mA,运动速度180mm/min,送丝速度15mm/s,椭圆扫描模式下获得熔覆层表观形貌良好,此时成形件的强度比锻件标准高,增材金属塑性略低于锻件标准,结合处金属塑性略高于锻件标准。两处试样的拉伸断裂方式均为韧性断裂。 |
关键词: TC11钛合金;电子束;增材制造;正交试验 |
基金项目: |
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Study on the Forming Technology and Mechanical Properties of Titanium Alloys Produced by Electron Beam Additive Manufacturing |
Wang Ningning Han Dong Wu Jun Gao Shikai
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Xi’an Aerospace Power Machinery Co., Ltd., Xi’an 710025
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Abstract: |
The process of electron beam additive manufacturing based on TC11 titanium alloy was studied to explore the optimized process of large and complex titanium alloy structural parts fabricated by “additive manufacturing + forging”. Upgraded EBAM equipment KL-106M was adopted to carry out orthogonal experiment. The results show that with beam intensity of 20Am, welding speed of 180mm/min, wire feed rate of 15mm/s and scan mode of ellipse, cladding titanium alloy layer by EBAM was lubricous and steady. Their strengths are significantly higher than standard for forgings. Cladding metal is slight lower and the joint with forging is slight higher. Fracture modes of both are ductile fracture. |
Key words: TC11 titanium alloys;electron beam;additive manufacturing;orthogonal experiment |