Abstract
The solidification-mode during GTA welding of martensitic stainless steel was directly judged by using TRXRD system for welding. The X-ray detector with wider area was applied and its usefulness for the monitor of solidification process of welding was presented in the point of accuracy of the mode-judgments. The solidification behavior observed was related to the result of the trans-varestraint test to relate the solicitation phases and the hot-cracking phenomena. Furthermore, the retaining behavior of delta-ferrite from the temperature at solidification process to the room temperature was chased in-situ.
