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首页> 外文期刊>Journal of Materials Research >Microstructures and mechanical properties of Ti-44AI-5Nb-3Cr-1.5Zr-xMo-yB alloys
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Microstructures and mechanical properties of Ti-44AI-5Nb-3Cr-1.5Zr-xMo-yB alloys

机译：Ti-44ai-5NB-3CR-1.5ZR-XMO-YB合金的组织和力学性能

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摘要

TiAI alloys are potential structural high-temperature structural materials at a service temperature of ～900°C, while poor ductility at room temperature and high creep rate at the elevated temperature limits the applications. To improve the room-temperature and high-temperature mechanical properties of Ti-44AI-5Nb-3Cr-1.5Zr, Mo and B were introduced into this system and Ti-44AI-5Nb-3Cr-1.5Zr-xMo-yB alloys were proposed. And then, we, respectively, studied the microstructures and mechanical properties of Ti-44AI-5Nb-3Cr-1.5Zr-xMo-0B and Ti-44AI-5Nb-3Cr-1.5Zr-1Mo-yB to elucidate the role for the addition of Mo and B. It is found that Mo can increase the fraction of B2 phase in the alloys and the microstructures of the alloys are greatly refined by the addition of B. The compression test results indicate that Mo has a positive influence on the high-temperature compressive properties of TiAI-based alloys, whereas B addition can improve their room-temperature compressive properties of Ti-44AI-5Nb-3Cr-1.5Zr-1Mo-yB alloys; the morphology of borides in each sample should be the structural origin for these phenomena.
机译：TIAI合金是潜在的结构高温结构材料，在〜900°C的服务温度下，而室温下的延展性差，高温温度下的高蠕变率限制了应用。为了改善Ti-44ai-5nb-3cr-1.5zr的室温和高温力学性能，将Mo和B引入该系统中，提出了Ti-44ai-5nb-3cr-1.5zr-xmo-Yb合金。然后，我们分别研究了Ti-44ai-5nb-3cr-1.5zr-xMo-0b和Ti-44ai-5nb-3cr-1.5zr-1mo-yb的微观结构和力学性能，以阐明添加的作用Mo和B.发现Mo可以增加合金中B2相的级分，并且通过添加B，合金的微观结构大大改进。压缩试验结果表明Mo对高度影响TiAi基合金的温度抗压性能，而B添加可以改善Ti-44ai-5NB-3CR-1.5ZR-1MO-YB合金的室温压缩性能;每个样品中的硼化物的形态应该是这些现象的结构来源。

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  • 来源
    《Journal of Materials Research》 |2020年第20期|2756-2764|共9页
  • 作者

    Zhiping Li; Donghui Zhang; Liangshun Luo; Binbin Wang; Liang Wang; Yanqing Su; Jingjie Guo; Hengzhi Fu;

  • 作者单位

    National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 People's Republic of China;

    National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 People's Republic of China;

    National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 People's Republic of China;

    National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 People's Republic of China;

    National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 People's Republic of China;

    National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 People's Republic of China;

    National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 People's Republic of China;

    National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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