1. State Key Laboratory of Powder Metallurgy, Central South University, Lu Mountain South Road, Changsha 410083, China
2. Hunan Xiangtou Goldsky Titanium Metal Co. Ltd., No. 116, Linyu Road, Yuelu Zone, Changsha 410221, China
3. Xiangtan Iron & Steel Group Co. Ltd., Yue Tang District, Xiangtan 411104, China