Microstructures and mechanical properties of (Ti,Cr)Al/Al2O3 composites fabricated by reactive hot pressing from Ti, Al and Cr2O3
Microstructures and mechanical properties of (Ti,Cr)Al/Al2O3 composites fabricated by reactive hot pressing from Ti, Al and Cr2O3
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Ti、Al和Cr2O3反应热压制备(Ti,Cr)Al/Al2O3复合材料的显微组织和力学性能
DOI：
10.1016/j.jallcom.2013.03.066
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发表时间：
2013-08
影响因子：
6.2
通讯作者：
Wang, Fen
中科院分区：
文献类型：
--
作者：
Zhu, Jianfeng;Yang, Wenwen;Wang, Fen
以Cr2O3、Al和Ti粉末为原料，采用反应热压法制备了原位成形al2o3增强钛铝化物复合材料。研究了添加cr2o3对（Ti,Cr）Al/ al2o3复合材料显微组织和力学性能的影响。结果表明：随着Cr2O3用量的增加，TiAl基体逐渐细化；随着cr2o3含量的增加，（Ti,Cr）Al/ al2o3复合材料的维氏硬度和密度逐渐增大。当cr2o3含量为4.47wt时。%时，复合材料的抗压强度、抗弯强度和断裂韧性分别达到1032MPa、634MPa和9.78MPam1/2的最大值，比单片TiAl基合金分别提高约18%、78%和80.5%。（Ti,Cr）Al/Al2O3复合材料力学性能的提高是由于TiAl基体中的Cr固溶体与原位形成的Al2O3结合产生的增韧作用所致。
Titanium aluminide composites reinforced with in situ formed Al2O3were fabricated by a reactive hot press method, using Cr2O3, Al and Ti powders as raw materials. The effect of Cr2O3addition on the microstructures and mechanical properties of the (Ti,Cr)Al/Al2O3composite was characterized. The results show that the TiAl matrix is refined gradually with increasing the amount of Cr2O3. The Vickers-hardness and densities of the (Ti,Cr)Al/Al2O3composite increase gradually with increasing Cr2O3content. When the Cr2O3content is 4.47wt.%, the compressive strength, flexural strength and fracture toughness of the composite reach the maximum values of 1032MPa, 634MPa and 9.78MPam1/2, which are substantially higher than those of the monolithic TiAl based alloy by about 18%, 78% and 80.5%, respectively. The increase in mechanical properties for the (Ti,Cr)Al/Al2O3composite is due to the toughening effect arising from the combination of Cr solid solution in TiAl matrix and in situ formed Al2O3.
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DOI：
10.1016/0921-5093(92)90256-z
发表时间：
1992-05
影响因子：
6.4
作者：
K. Maki;M. Shioda;Mamoru Sayashi;T. Shimizu;S. Isobe
通讯作者：
K. Maki;M. Shioda;Mamoru Sayashi;T. Shimizu;S. Isobe
影响因子：
4.4
作者：
M. A. Muñoz-Morris;I. Gil;D. G. Morris
通讯作者：
M. A. Muñoz-Morris;I. Gil;D. G. Morris
影响因子：
1.8
作者：
H. Mabuchi;K. Harada;H. Tsuda;Y. Nakayama
通讯作者：
H. Mabuchi;K. Harada;H. Tsuda;Y. Nakayama
影响因子：
9.4
作者：
R. Bohn;T. Klassen;R. Bormann
通讯作者：
R. Bohn;T. Klassen;R. Bormann
DOI：
10.1007/bf02851355
发表时间：
1991-11
期刊：
Metallurgical Transactions A
影响因子：
--
作者：
Shyh‐Chin Huang;E. Hall
通讯作者：
Shyh‐Chin Huang;E. Hall