Abstract
The research on welding process and weldability of TC4 titanium alloy has been widely concerned at home and abroad. Therefore, this paper mainly reviewed the current research progress of the effect of laser welding process on the geometrical dimensions, microstructure and mechanical properties of thin plate TC4 alloy. The weld geometrical dimension and microstructure transformation as well as the related mechanism were analyzed and discussed. It is found that the change of weld geometrical dimension is mainly due to the variation of welding heat input, which leads to the change of laser welding keyhole shape and mode. The increase of welding heat input causes the transformation of the microstructure. The acicular martensite α' phase is the main strengthening phase, with the blocky αm and Widmanstatten α phase as the main malleable phases. The laser energy should be strictly controlled to improve the welding quality in actual production applications.
| Translated title of the contribution | Research progress of weld formation and performance control of thin plate TC4 titanium alloy by laser welding |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 53-66 |
| Number of pages | 14 |
| Journal | Iron Steel Vanadium Titanium |
| Volume | 43 |
| Issue number | 1 |
| DOIs | |
| State | Published - Feb 2022 |
| Externally published | Yes |
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