FeCrAl alloys were prepared with TiC additions to act as hydrogen traps and improve resistance to hydrogen cracking. Weldability results showed that alloys with up to 20 wt% Al and 11 wt% Cr could be prepared crack-free with relatively small TiC additions of ~ 4 wt%. Thermogravimetric analysis of Fe-10Al-5Cr corrosion coupons with and without TiC has shown that the corrosion resistance is not s...

Abstract The microstructure of Fe-15Mn-10Al-5Ni-0.8C low density duplex steel ingots was studied by laser confocal scanning calorimetry , metallographic microscopy and electron microscopy. results indicated that: the mainly composed coarse austenite dendrites δ -ferrite phase in dendrite. could be completely eliminated solution treatment. A dynamic model grain growth established. Through analys...

Abstract In this study, Sn-doped 10HfO 2 –10Al O 3 –80SiO glasses were prepared using a xenon imaging furnace and their physical, optical, scintillation properties investigated. At the composition ratio, specimens did not completely vitrify, they crystallized that contained nanocrystals of c-HfO . Raman spectra show absorption bands due to Si–O–Hf bonds, band clearly indicated an effective mole...

We investigate the effect of natural age-hardening response Al-20Zn-3Cu alloy with aging times up to 12 months. The ultimate tensile strength is drastically enhanced from 308 320 MPa after 2 months and 346 9 Then, age hardening becomes saturated A microstructural investigation reveals that mechanism mainly induced by diffusion Zn element. First, a rapid decrease in volume fraction eutectoid lam...

cu-mo and cu-ti contact structures were fabricated on multi-crystalline silicon substrates to provide a low resistance ohmic contact. deposition steps are done in an excellent vacuum chamber by means of electron beam evaporation and samples are then annealed for the realization of an efficient alloy layer. the effects of process parameters such as film thickness, annealing duration and temperat...