부산대학교 도서관

Abstrac t-The diffusion welding of ultrafine-grained pseudo-[alpha]-titanium Ti-4.73% Al-1.88% V alloy specimens has been performed by spark plasma sintering. It has been shown that the destruction of welded joints in the ultrafine-grained (UFG) specimens under hot salt corrosion (HSC) conditions has a two-stage character: intercrystallite corrosion (ICC) is developed at the first stage to turn into pitting corrosion at the following stage. It has been established that the resistance to intercrystallite corrosion is governed by the concentration of vanadium on grain boundaries, the size and volumetric content of [beta]-phase particles, and the existence of pores in a welded joint. It has been demonstrated that the welded joints of the ultrafine-grained specimens have higher hardness and resistance to intercrystallite corrosion as compared to coarse-grained specimens.
Author(s): V. N. Chuvil'deev [sup.1], A. V. Nokhrin [sup.1], P. V. Andreev [sup.1], N. G. Sandler [sup.2], A. M. Bakmetyev [sup.2], M. M. Vostokov [sup.1], K. V. Likhnitskii [sup.1], V. [...]