| 袁建鹏,于月光.两相同步原位自生型 Ni3Al-Cr7C3 金属陶瓷涂层的
第二相强化机理研究[J].热喷涂技术,2023,(1):29~37. |
| 两相同步原位自生型 Ni3Al-Cr7C3 金属陶瓷涂层的
第二相强化机理研究 |
| The Second Phase Strengthening Mechanismof Two-phase Simultaneously In-situ Ni3Al-Cr7C3 Cermet Coatings |
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| DOI：10.3969/j.issn.1674-7127.2023.01-004 |
| 中文关键词: Ni3Al 金属间化合物 金属陶瓷涂层 原位自生碳化物 第二相强化 Ni3Al-Cr7C3 |
| 英文关键词:Ni3Al intermetallic compound Metal ceramic coating In-situ carbide Second phase strengthening Ni3Al-Cr7C3 |
| 基金项目: |
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| 中文摘要: |
| 本文对两相同步原位自生型 Ni3Al-Cr7C3 金属陶瓷涂层中陶瓷相的第二相强化作用开展研究， 将复合材料
经典 Hall-Petch 关系适用范围扩展至金属陶瓷涂层材料， 建立了金属陶瓷样品的硬度随强化相尺寸变化的模型，
并采用粘结相平均自由程和相界面共格的结构取向关系对 Hall-Petch 关系公式进行校准。 研究发现， Ni3Al-Cr7C3
涂层内部的织网结构受粘结相 (Ni3Al) 平均自由程和相界面共格取向关系的共同影响， 符合弥散强化与相界面共
格效应协同作用的强化机理， 接近于第二相沉淀强化的作用。 |
| 英文摘要: |
| The second phase strengthening effect of the ceramic phase in the two-phase synchronous in-situ
Ni3Al-Cr7C3 cermet coatings was investigated. The classical Hall-Petch relationship for composite materials was
extended to the cermet coating materials, through which a model was established for the hardness of cermets as
a function of the size of the strengthening phase. The Hall-Petch relationship formula was calibrated by means of
the mean free path of the bonding phase and the structural orientation relationship of the coherent phase interface.
It was found that the mesh structure in the Ni3Al-Cr7C3 coating was affected by the mean free path of bonding
phase (Ni3Al) and the orientation relationship between coherent interfaces. This conforms to the strengthening
mechanism of the synergistic effect of dispersion strengthening and coherent effect at the phase interface, and was
similar to the effect of the second phase precipitation strengthening |
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