Abstract: During the last decade, the demand for natural gas has steadily increased for the prevention of environmental pollution. For this reason, many liquefied natural gas (LNG) carriers have been manufactured. Since one of the most important issues in the design of LNG carriers is to guarantee structural safety, the use of low-temperature materials is increasing. Among commonly employed low...

In this work we establish an approach to model miscibility gaps of alloys using statistical physics, lattice dynamics from first-principles calculations. We carefully calculate the entropy include all processes introducing disorder system, i.e., combining electronic, phononic, and configuration entropies. Furthermore present our algorithm for generating Special Quasirandom Structures (SQS). gap...

In the present study, the Weldability and microstructure of dissimilar welds of AISI 347austenitic stainless steel to ASTM A335 low alloy steel was investigated. For this purpose, gas tungsten arc welding process and two filler metals including ERNICr-3 and ER309L were used. After welding, the microstructure of the different zones of each joint, including weld metals, heat affected zone (HAZ) 1...

Tungsten belongs to group of refractory metal that possess extraordinary resistance heat and wear it is the heaviest engineering material. Because its properties tungsten used for special purposes. This paper presents results mechanical microstructure research on example characteristic heavy alloys 91W-6Ni-1.8Fe-1Co 93W-5Ni-1.6Fe-0.3Co with different Ni/Co ratios. The proper ratio important obt...

The use of depleted uranium in armor-penetrating munitions remains a source of controversy because of the numerous unanswered questions about its long-term health effects. Although there are no conclusive epidemiological data correlating depleted uranium exposure to specific health effects, studies using cultured cells and laboratory rodents continue to suggest the possibility of genetic, repro...