Abstract
When studying laser welding of austenitic stainless steel, hot
cracking is frequently observed. To prevent hot cracking in laser
welded stainless steel it is advantageous to obtain primary
solidification of the ferrite phase that subsequently, on cooling,
transforms in the solid state to the austenite phase.Most
stainless steels are weldable by conventional welding techniques.
However, during laser weldng the solidification velocities can be
very much higher than by conventional welding techniques. By
increasing the solidification velocity to a critical value known
as the transition velocity, the primary solidification phase is
found to change from ferrite to austenite.A novel laser remelting
technique has been modified to enable the transition velocity for
laser welded austenitic stainless steels to be deermined
experimentally and on the basis of results from 17 different alloy
compositions an equation for the calculation of the transition
velocity from alloy composition is proposed.
Original language | English |
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Title of host publication | Proceedings |
Publication date | 1997 |
Publication status | Published - 1997 |
Event | The First ASM European Conference on Welding and Joining Science Technology - Madrid, Spain Duration: 10 Mar 1997 → 12 Mar 1997 Conference number: 1 |
Conference
Conference | The First ASM European Conference on Welding and Joining Science Technology |
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Number | 1 |
Country/Territory | Spain |
City | Madrid |
Period | 10/03/1997 → 12/03/1997 |