The influence of lanthanum on the microstructure, deformed behavior, microcrack susceptibility of intermetallic compound Al66Mn9Ti25 was investigated. Adding lanthanum into intermetallic compound Al66Mn9Ti25, the lattice parameters are not changed and the Ll2 structure is maintained. At the same time, the dendritical grain and fine second phase are obtained, which inhibits the microcrack initiation and intergranular failure. On the other hand, the movability of dislocation is enhanced and the compressive ductility is improved. The mechanism about the role of lanthanum in intermetallic compound Al66Mn9Ti25 was discussed.
参考文献
| [1] | Umakoshi Y;YAMAGNCHI M;SAKAGAMI T.Oxidation resistance of intermetallic compounds Al3Ti and TiAl[J].Journal of Materials Science,1989(24):1599-1603. |
| [2] | WINNICA M B;VARIN R A.The effect of titanium on the mechanical properties of the cubic modifications of Al3Ti intermetallic compound[J].Scripta Metallurgica et Materialia,1991(25):2297-2302. |
| [3] | Hanamura T;SUGAI T;TANINO M.Rapidly quenched intermetallic compounds TiAl and Al3Ti[J].Journal of Materials Science,1990(25):3286-3290. |
| [4] | NIC J P;ZHANG S;MIKKOLA D E.Observation on the systematic alloying of Al3Ti with fourth period to yield cubic phases[J].Scripta Metallurgica et Materialia,1990(24):1099-1104. |
| [5] | Hong T;FREEMAN A J.Effect of ternary additions on the structural stability and electronic structure of intermetallic compounds:Al3Ti+Cu[J].Journal of Materials Research,1991(10):330-338. |
| [6] | Morris D G.Dislocations in plastically deformed L12 compounds based on Al3Ti[J].Journal of Materials Research,1992(02):303-312. |
| [7] | 秦家银.Influence of Rare Earth Element on Short Fatigue Crack Threshold for Al-Li Alloy 2090[J].JOURNAL OF RARE EARTHS,1994(04):268. |
| [8] | ChenZheng,WangYongxin,DingZhanlai.Fatigue and Fracture Mechanisms of Aluminum-Lithium Alloy Containing Cerium[J].稀土学报（英文版）,1999(01):74-76. |
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