[1] Department of Metallurgical and Materials Engineering, Montana Technological University, Butte,MT,59701, United States
[2] Department of Mechanical Engineering, Montana Technological University, Butte,MT,59701, United States
[3] Freeport-McMoRan, Tucson,AZ,85622, United States
[4] Chevron Phillips Chemical, Bartlesville,OK,74003, United States