| Sm_2O_3掺杂强韧化TiAl复合材料 |
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| 引用本文： | 王晓凤,王芬,朱建锋,向六一.Sm_2O_3掺杂强韧化TiAl复合材料[J].中国有色金属学会会刊,2011(6):1263-1268. |
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| 作者姓名： | 王晓凤 王芬 朱建锋 向六一 |
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| 作者单位： | 陕西科技大学材料科学与工程学院教育部轻化工助剂化学与技术重点实验室; |
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| 基金项目： | Project(51072109)supported by the National Natural Science Foundation of China; Project(XK060101)supported by the Foundation of Xianyang,China; Project supported by the Graduate Innovation Fund of Shaanxi University of Science and Technology,China; Project(BJ08-14)supported by the Education Foundation of Shaanxi University of Science and Technology,China |
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| 摘 要： | 以Ti,Al,TiO2和Sm2O3为原料,利用原位合成法制备Al2O3/TiAl复合材料;并借助XRD、SEM和力学性能测试,研究Sm2O3掺杂对Al2O3/TiAl复合材料微观结构和力学性能的影响。结果表明：掺杂Sm2O3的Al2O3/TiAl复合材料由γ-TiAl/α2-Ti3Al基体相以及Al2O3、SmAl增强相组成;掺杂Sm2O3细化了复合材料的微观结构,改善了TiAl复合材料的力学性能;当Sm含量为5%（质量分数）时,该复合材料的弯曲强度和断裂韧性达到最大,分别为658.9MPa和10.13MPa·m1/2。
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| 关 键 词： | TiAl Sm2O3 晶粒尺寸 力学性能 |
Reinforcing and toughening of TiAl composites by doping Sm_2O_3 |
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| WANG Xiao-feng, WANG Fen, ZHU Jian-feng, XIANG Liu-yi.Reinforcing and toughening of TiAl composites by doping Sm_2O_3[J].Transactions of Nonferrous Metals Society of China,2011(6):1263-1268. |
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| Authors: | WANG Xiao-feng WANG Fen ZHU Jian-feng XIANG Liu-yi |
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| Affiliation: | Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry of Ministry of Education, School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China |
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| Abstract: | AI203/TiA1 composites were fabricated by in-situ reaction synthesis using Ti, A1, TiO2 and Sm203 as starting materials. Effect of the doping Sm203 on the microstructures and properties of the A1203/TiA1 composites was analyzed by X-ray diffraction （XRD）, scanning electron microscopy （SEM） and universal properties tests. The results show that the phases of the Sm203-doped composites are mainly composed of ）,-TiA1/a2-Ti3A1 matrix and reinforcing phases of A1203 and SmA1. The microstructures of A1203/TiAI composites are significantly refined with doping Sm203. Doping Sm203 has a positive effect on improving the mechanical properties of AlaO3/TiA1 composites. When the Sm content is 5% （mass fraction）, the flexural strength and fracture toughness reach the maximum values of 658.9 MPa and 10.13 MPa＇m~/2, respectively. |
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| Keywords: | TiAl Sm2O3 grain size mechanical properties |
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