葛昌纯, 夏元洛, 柳光祖. YA-TZP陶瓷材料的性能及在拉丝模的应用[J]. 工程科学学报, 1991, 13(S2): 61-64. DOI: 10.13374/j.issn1001-053x.1991.s2.011
引用本文: 葛昌纯, 夏元洛, 柳光祖. YA-TZP陶瓷材料的性能及在拉丝模的应用[J]. 工程科学学报, 1991, 13(S2): 61-64. DOI: 10.13374/j.issn1001-053x.1991.s2.011
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Ge Changchun, Xia Yuanluo, Liu Guangzu. Investigation On Microstructure of YA-TZP and Its Application for Wire Drawing Dies[J]. Chinese Journal of Engineering, 1991, 13(S2): 61-64. DOI: 10.13374/j.issn1001-053x.1991.s2.011
Citation: Ge Changchun, Xia Yuanluo, Liu Guangzu. Investigation On Microstructure of YA-TZP and Its Application for Wire Drawing Dies[J]. Chinese Journal of Engineering, 1991, 13(S2): 61-64. DOI: 10.13374/j.issn1001-053x.1991.s2.011
shu

YA-TZP陶瓷材料的性能及在拉丝模的应用

Investigation On Microstructure of YA-TZP and Its Application for Wire Drawing Dies

    摘要
  • 摘要: 研究发现,YA-TZP陶瓷材料的性能取决于其显微结构。当临界晶粒度约为～0.7μm时,其最佳机械性能为σb=940-1010MPa,K1c=10.9 MPa√m,而且在250℃时效50h无中温强度衰减。还研究了ZrO2基体中不同相的形貌、显微裂纹以及第二相质点,并用透射电子显微镜发现了位错网和位错线。这种YA-TZP陶瓷材料用于拉丝模有良好的应用前景。

     

    Abstract: The properties of YA-TZP depend on its microstructures. Optimal combination of mechanical properties with σb =940~1010 MPa and K1c=10.9 MPa√m was obtained as the critical grain size~0,7μm. No strength degradation after aging at 250℃ for 50h. The morphology of different phases in ZrO2, the microcracks and particles of secondary phase wereinvestigated and dislocation networks and lines were found under TEM. Pre-liminary tests show good prospect on application for wire drawing dies.

     

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