Influence of process control agents on the performance of Ni3Al by mechanical alloying
来源期刊：Rare Metals2008年第6期
论文作者：LIAN Jiqionga, MENG Jieb, and JIA Chengchanga a School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing , China b Institute of Metal Research, Chinese Academy of Sciences, Shenyang , China
文章页码：648 - 651
摘 要：The influence of process control agents （PCAs） on the mechanical properties of Ni3Al intermetallic compounds by mechanical alloying was in- vestigated in order to develop oxide deposition reinforced intermetallics. The PCAs in mechanical alloying were pure ligroin, 75 vol.% ligroin + 25 vol.% alcohol, 50 vol.% ligroin + 50 vol.% alcohol, 25 vol.% ligroin + 75 vol.% alcohol, and pure alcohol. The normal composition is Ni-22.9at.%Al-0.5at.%B, the ball-to-powder weight ratio is 10:1, and the milling time is 30 min. Then, the powders were sintered by spark plasma sintering under 40 MPa for 5 min at 1000°C. The results show that a higher bending strength and a higher hardness were obtained when the PCAs were 75% ligroin + 25% alcohol in mechanical alloying. The bending strength is about 2700 MPa and the hardness （HV） is more than 6 GPa.
LIAN Jiqionga, MENG Jieb, and JIA Chengchanga a School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China b Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China
摘 要：The influence of process control agents （PCAs） on the mechanical properties of Ni3Al intermetallic compounds by mechanical alloying was in- vestigated in order to develop oxide deposition reinforced intermetallics. The PCAs in mechanical alloying were pure ligroin, 75 vol.% ligroin + 25 vol.% alcohol, 50 vol.% ligroin + 50 vol.% alcohol, 25 vol.% ligroin + 75 vol.% alcohol, and pure alcohol. The normal composition is Ni-22.9at.%Al-0.5at.%B, the ball-to-powder weight ratio is 10:1, and the milling time is 30 min. Then, the powders were sintered by spark plasma sintering under 40 MPa for 5 min at 1000°C. The results show that a higher bending strength and a higher hardness were obtained when the PCAs were 75% ligroin + 25% alcohol in mechanical alloying. The bending strength is about 2700 MPa and the hardness （HV） is more than 6 GPa.
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