A COMPARATIVE STUDY OF SINGLE MODE FIBRE LASER AND Nd:YAG LASER WELDING OF TI-6AL-4V
This study considers welding of Ti-6Al-4V, which is widely used in the chemical, automotive, aerospace and medical industries due to its high strength-to-weight ratio and corrosion resistance. Bead-on-plate melt on 2.15 mm thick plates with a 1 kW single mode fibre laser and a continuous wave 4 kW Nd:YAG laser are investigated and compared. The fibre laser was found to produce narrower welds with finer microstructure using less than 30％ the laser power required by the Nd:YAG laser. However, levels of porosity were generally higher meaning the Nd:YAG laser welds were classified as higher quality according to American Welding Standard D17.1:2007. In both cases there was a trend for lower porosity at a higher laser power when the welding speed was higher. The difference in porosity levels may have been partly or wholly due to the different inert gas shielding systems used.
Fibre laser Nd:YAG laser Laser welding Ti-6Al-4V
Hui-chi Chen Jonathan Blackburn Andrew J Pinkerton Lin Li Paul Hilton
Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The Univers TWI Ltd, Granta Park, Great Abington, Cambridge, CB21 6AL, United Kingdom
国际会议
第三届太平洋国际激光与光学应用会议(PICALO 2008)
北京
英文
163-168
2008-04-16（万方平台首次上网日期，不代表论文的发表时间）