Search

Phase relations in the Ge–Ni–Ti ternary system have been studied through alloy sampling assisted with electron probe microanalysis (EPMA), and X-ray diffraction (XRD) techniques. The binary phase GeTi 3 was confirmed to exist stably at 973 K and two new ternary phases, τ 1 and τ 2 , were detected, of which only τ 1 can be stable up to 1073 K. In light of the characterized phases in the annealed alloys, isothermal sections of the Ge–Ni–Ti system were constructed, which consist of 22 and 21 three-phase regions at 973 and 1073 K, respectively. In addition, Ti can substitute for about 14 at.% Ge in β(Ge,Ti)Ni 3 . [ABSTRACT FROM AUTHOR]

Phase equilibria in the Fe–Sn–Ti ternary system at 1073 and 1273 K were experimentally investigated through alloy sampling approach facilitated with electron probe micro-analyzer and X-ray diffraction. Two ternary compounds TiFe 2 Sn and Ti 2 FeSn were detected. Ten 3-phase equilibria at 1073 K, including β(Ti)+Ti 3 Sn+FeTi, Ti 3 Sn+FeTi+Ti 5 Sn 3 , FeTi+Ti 5 Sn 3 +Ti 2 FeSn, Ti 2 FeSn+Fe 2 Ti+TiFe 2 Sn, Ti 2 FeSn+Ti 5 Sn 3 +Ti 6 Sn 5 , FeTi+Fe 2 Ti+Ti 2 FeSn, Ti 2 FeSn+Ti 6 Sn 5 +TiFe 2 Sn, TiFe 2 Sn+Ti 6 Sn 5 +Liquid, TiFe 2 Sn+Fe 5 Sn 3 +Liquid and α(Fe)+Fe 2 Ti+TiFe 2 Sn, and seven 3-phase equilibria including β(Ti)+Ti 3 Sn+FeTi, Ti 3 Sn+FeTi+Ti 5 Sn 3 , Ti 3 Sn+Ti 2 Sn+Ti 5 Sn 3 , FeTi+Fe 2 Ti+Ti 5 Sn 3 , Fe 2 Ti+Ti 2 FeSn+Ti 5 Sn 3 , Ti 2 FeSn+Fe 2 Ti+TiFe 2 Sn and Ti 2 FeSn+Ti 6 Sn 5 +TiFe 2 Sn at 1273 K were experimentally confirmed. At 1073 K, the homogeneity ranges of Ti 2 FeSn were 45.5–51.4 at% Ti and 24–27.7 at.% Sn while TiFe 2 Sn exhibited a large homogeneity range of 46.9–66.4 at% Fe and 22.7–26.4 at% Sn, the solubility of Sn in Fe 2 Ti,Fe in Ti 5 Sn 3 , Ti in Fe 5 Sn 3 and Fe in Ti 6 Sn 5 can be up to 4.6 at.%, 10.2 at%, 3.7 at% and 21 at%, respectively, while at 1273 K, Solubility of Sn in Fe 2 Ti considerably increased to 10.8 at%, Fe in Ti 5 Sn 3 changes little. According to the measured phase relations, an invariant reaction was further deduced, which was Fe 2 Ti+Ti 5 Sn 3 ↔FeTi+Ti 2 FeSn occurring between 1073 K and 1123 K. [ABSTRACT FROM AUTHOR]

For the very large floating structure (VLFS) which is deployed near seashores, islands and reefs, the encounter wave conditions are always extremely complex. Traditional methods using homogeneous wave environment conditions cannot be applied for the analysis. In order to provide references for the further development of numerical methods, this paper reports an experimental study on responses of an 8-module VLFS under three different encounter wave conditions. The wave heights, accelerations, motions and connector loads of VLFS in three test schemes are obtained and analyzed. The comparative results show that the inhomogeneous wave conditions have an essential influence on the responses of VLFS. Especially for the connector loads, the values in the inhomogeneous wave conditions increase a lot compared with the other two test schemes. It indicates the traditional numerical methods using homogeneous wave field may not guarantee a safe design of VLFS and its connectors in the complicated wave environments. • Experimental study on responses of an 8-module VLFS under three different encounter wave conditions was carried out. • The wave heights, accelerations, motions and connector loads of VLFS in three test schemes were obtained and analyzed. • Traditional methods using homogeneous wave may not guarantee a safe design of VLFS in the complicated wave conditions. [ABSTRACT FROM AUTHOR]