1. Department of Mechanical Engineering, Dalhousie University, 1360 Barrington St., Halifax, Nova Scotia B3J 1Z1, Canada
2. CanmetMATERIALS, Natural Resources Canada, 183 Longwood Rd., Hamilton, Ontario L8P 0A5, Canada
3. GKN Powder Metallurgy, 1670 Opdyke Ct., Auburn Hills, MI 48326, USA
4. Department of Mechanical Engineering, Dalhousie University, 1360 Barrington St., Halifax, Nova Scotia B3J 1Z1, Canada (Corresponding author), e-mail: Paul.Bishop@dal.ca, http://orcid.org/0000-0002-2340-7642