The mechanical properties and microstructure of as-cast Nb-Ti microalloyed steel at different temperatures and cooling rates are investigated in this paper.The
Titanium alloy Ti6Al4V,as difficult-to-cut material,has poor machinability.Conventional cutting fluid serves as a coolant and lubricant.In green drilling,water
Two opposing intellectual traditions and their contem-porary developments regarding the relations among population, available resources, and quality of life as