The stress-corrosion cracking susceptibility of near-α titanium alloy IMI 834 in presence of hot salt

The mechanisms of hot salt stress corrosion cracking in titanium alloy Ti-6Al-2Sn-4Zr-6Mo

“…Such hydride formation was observed in our study, from both XRD and HRTEM analysis. The kinetics of the above reactions increases with temperature and hence the generation of hydrogen increases [6,19,30] at higher temperatures. In addition, the diffusion of hydrogen in metals obeys the Arrhenius equation [31] and the diffusion of hydrogen is rapid [32] at higher temperatures.…”

The Dislocation Mechanism of Stress Corrosion Embrittlement in Ti-6Al-2Sn-4Zr-6Mo

“…[5] The unwelcome discovery of this problem in the 1960s led to extensive research, [6][7][8][9][10][11][12] which has continued to the present day. [13,14] In 1972, Blackburn et al (in Reference 15) found titanium to be susceptible to stress corrosion cracking (SCC) under a variety of aggressive media, including nitric acid, nitrogen tetroxide, and molten salts. Particular consideration was given to the effect of NaCl at temperatures above~300 deg.…”

Hot Salt Stress Corrosion Cracking Study of Selective Laser Melted Ti-6Al-4V Alloy

“…Furthermore, the as-built SLM showed faceted transgranular brittle fracture, whereas cracking in wrought alloy occurred as a mixed mode. That is, in the wrought alloy the specimen fractured through transgranular cracking in primary a grains and intergranular cracking along the primary a and transformed b boundaries ( Ref 27,28,32,33,44). It is necessary to point out that even the heat-treated SLM alloy, where a¢ -martensite transformed into a + b phase the mode of cracking is different from that observed in the wrought alloy.…”