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关于95毫米Ti-6Al-4V厚板的K-TIG接接头的微观结构和性能研究
Yinqing Gong1,2,3,4,5, Songxiao Hui1,4,5,6, Yang Yu1,4,5
1State Key Laboratory of Nonferrous Structural Materials, China GRINM Group Co., Ltd., Beijing 100088, China.
Materials (Basel, Switzerland)
|August 28, 2025
概括
关键孔-钢惰性气体接 (K-TIG) 用弧度振荡成功接厚型Ti-6Al-4V合金. 这种先进的接技术提高了冲击性,
科学领域:
- 材料科学与工程
- 金属工程
- 接技术
背景情况:
- 接像Ti-6Al-4V这样的厚合金在实现具有最佳机械性能的稳固接头方面存在挑战.
- 传统的接方法可能难以完全透,并且在厚的断面上没有缺陷.
研究的目的:
- 通过热电线填充和机械弧度振荡对95毫米厚的Ti-6Al-4V板材进行接,以评估K-TIG的有效性.
- 描述接接头的微观结构,缺陷和机械性能,特别是冲击性.
主要方法:
- 用热线填充和机械弧度振荡的钥匙孔-钢惰性气体接 (K-TIG) 的应用
- 接95毫米厚的Ti-6Al-4V合金板.
- 微结构分析和接缺陷的评估,晶体纹理和冲击性.
主要成果:
- 根层厚度达到17毫米,平均填充厚度为2.5毫米,珠光滑,没有明显的缺陷.
- 接接头微结构包括各种形式的α阶段和细微的α+β微结构.
- 与基础材料相比,接金属和受热影响的区域具有较低的晶体质强度和更复杂的质地类型.
- 接接头具有出色的冲击性,接金属的性能明显优于基材和受热影响的区域.
- 确定高电流填充对增强金属冲击性至关重要.
结论:
- 使用机械弧振的K-TIG热线填充接技术对于接厚厚的Ti-6Al-4V合金板材非常有效.
- 这种技术可以产生无缺陷的接,具有优越的冲击性,这归因于接强化效应.
- 由此产生的微观结构和纹理变化有助于提高接接头的机械性能.
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