Rhenium Effect in Irradiated Mo-Re Alloys and Welds

Effect of heat input on microstructure and strength of welds in tantalum and niobium alloys

Welding of niobium and tantalum materials is currently conducted in vacuum or inert gas chambers, which limits the size of the equipment to be produced. The objective of this study is to investigate the means to make TIG welding on these materials in atmospheric environment and analyse the effect of heat input on the properties of welds. It was found that it is possible to make TIG welds on the...

Stress-induced Transformations in Ti-mo Alloys

Ordered structures in rhenium binary alloys from first-principles calculations.

Rhenium is an important alloying agent in catalytic materials and superalloys, but the experimental and computational data on its binary alloys are sparse. Only 6 out of 28 Re transition-metal systems are reported as compound-forming. Fifteen are reported as phase-separating, and seven have high-temperature disordered σ or χ phases. Comprehensive high-throughput first-principles calculations pr...

Optimizaton of Mo-Si-B Intermetallic Alloys

Mo-Si-B intermetallics consisting of the phases Mo3Si and Mo5SiB2, and a molybdenum solid solution (“ -Mo”), have melting points on the order of 2000 °C. These alloys have potential as oxidationresistant ultra-high-temperature structural materials. They can be designed with microstructures containing either individual -Mo particles or a continuous -Mo phase. A compilation of existing data shows...

Evaluation of Co-Cr Dental Alloys Welds Corrosion

SORIN POROJAN1, LILIANA POROJAN2* 1”V. Babes” University of Medicine and Pharmacy Timisoara, Faculty of Dentistry, Department of Oral Rehabilitation, Specialization Dental Technology, 9 Revolutiei 1989 Blv, Timisoara, Romania 2 ”V. Babes” University of Medicine and Pharmacy Timisoara, Faculty of Dentistry, Department of Prostheses Technology, Specialization Dental Technology, 9 Revolutiei 1989 ...