Mechanisms of stress relief cracking in titanium stabilised austenitic stainless steel

Effect of pre-strain on creep of three AISI 316 austenitic stainless steels in relation to reheat cracking of weld-affected zones

“…Consequently, carbon and nitrogen content seems to play a minor role in reheat cracking of type 316 stainless steels. On the contrary, in accordance with the work of Chabaud-Reytier et al on stabilised stainless steel [10], present results enlighten the major importance of pre-strain and stress triaxiality in the sensitivity to reheat cracking.…”

“…However, relaxation tests on CT specimens revealed crack propagation for both of these steels in the pre-strained state. Consequently, in accordance with Chabaud-Reytier et al who worked on a stabilised stainless steel [10], the present study showed that strain-induced precipitation is not a key parameter for reheat cracking of type 316 stainless steels.…”

“…Following reheat cracking of AISI 321-welded components [9], Chabaud-Reytier et al [10] studied the sensitivity of AISI 321 to reheat cracking. They first obtained simulated weld-affected zones by pre-straining and pre-ageing the material, then they measured their creep resistance and estimated their reheat-cracking sensitivity using a relaxation crack propagation test on Compact Tension (CT) specimens.…”

Evolution of Inclusions after Cerium and Titanium Addition in Aluminum Deoxidized Fe-17Cr-9Ni Austenitic Stainless Steel

“…Ti-stabilized austenitic stainless steel has been widely used in various industrial applications, such as chemical plants, power plants and pressure vessels in gas-cooled nuclear reactors. 1) The good mechanical properties and corrosion resistance make it perform well in the wicked environment, [2][3][4] and according to previous research, Al 2 O 3 , TiO x , Al 2 O 3 -TiO x and TiN were the main inclusions after the addition of aluminum and titanium to austenitic stainless steel. 5,6) Such inclusions were seriously affect the continuous casting process and final steel product quality.…”

Fissuration en relaxation des jonctions soudées en aciers inoxydables austénitiques

“…Le présent article décrit de manière chronologique et synthétique cetteétude qui a porté, initialement sur un acier stabilisé au titane AISI 321, puis, au regard des résultats, sur des aciers non stabilisés AISI 304 et AISI 316. Les résultats de ces travaux sont reportés en détail ailleurs [5][6][7][8][9]. Les compositions des matériaux etudiés sont reportées dans le tableau 1.…”