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多相V-Ti-Ni氫分離合金顯微組織與力學(xué)性能
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常州大學(xué)機(jī)械工程學(xué)院,常州大學(xué)機(jī)械工程學(xué)院,常州大學(xué)機(jī)械工程學(xué)院,常州大學(xué)機(jī)械工程學(xué)院,常州大學(xué)機(jī)械工程學(xué)院,常州大學(xué)機(jī)械工程學(xué)院,常州大學(xué)機(jī)械工程學(xué)院

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國家自然科學(xué)基金資助項目(項目號51705038),江蘇省自然科學(xué)基金資助項目(項目號BK20150268)


Microstructure and mechanical properties of multiphase V-Ti-Ni hydrogen separation alloys
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School of Mechanical Engineering, Changzhou University,,,,,,

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    摘要:

    V-Ti-Ni合金的顯微組織不僅影響氫分離性能,還將影響力學(xué)性能以及成形性能。本文研究了多相V100-2x-Tix-Nix (X=10, 15, 20)系列氫分離合金的顯微組織、硬度和拉伸性能。V100-2x-Tix-Nix合金鑄錠顯微組織均由枝晶相V基固溶體和枝晶間相NiTi和NiTi2組成。隨著合金中Ti和Ni的含量增加,枝晶間相在合金中體積占比增大,形成連續(xù)網(wǎng)狀,阻止枝晶臂的連接。在室溫下,合金整體硬度、抗拉強(qiáng)度、延伸率和斷面收縮率均隨Ti、Ni含量增加而升高。V基固溶體和NiTi2相是影響三種合金的整體硬度的主要因素。三種合金在室溫下均屬于脆性材料。合金中NiTi相含量對合金的延伸率有較大影響。

    Abstract:

    The microstructure of V-Ti-Ni alloy affects not only the hydrogen separation performance, but also the mechanical properties and formability. The microstructure, hardness and tensile properties of multiphase V100-2x-Tix-Nix (X=10, 15, 20) alloys for hydrogen separation were investigated. The microstructure of V100-2x-Tix-Nix alloys ingot consists of dendritic phase (V base solid solution) and interdendritic phase (NiTi and NiTi2). With the increase of the content of Ti and Ni in the alloy, the volume ratio of interdendritic phase in the alloy increases, and blocks the connection of dendrite arm due to forming a continuous network. At room temperature, the bulk hardness, tensile strength, elongation and reduction of area of the alloy increase with the increase of Ti and Ni content. V based solid solution and NiTi2 phase are the main factors affecting the bulk hardness of the three alloys. The three alloys are brittle materials at room temperature. The content of NiTi in the alloy has a great influence on the elongation of the alloy.

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江鵬,袁同心,肖思進(jìn),吳王平,王知鷙,丁金慧,蔣金金.多相V-Ti-Ni氫分離合金顯微組織與力學(xué)性能[J].稀有金屬材料與工程,2018,47(8):2537~2543.[Jiang Peng, Yuan Yongxin, Xiao Sijin, Wu Wangping, Wang Zhizhi, Ding Jinhui, Jiang jinjin. Microstructure and mechanical properties of multiphase V-Ti-Ni hydrogen separation alloys[J]. Rare Metal Materials and Engineering,2018,47(8):2537~2543.]
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  • 收稿日期:2017-08-21
  • 最后修改日期:2018-01-03
  • 錄用日期:2018-01-08
  • 在線發(fā)布日期: 2018-10-17
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