| 机械合金化对Y2O3/Cr-Ni基复合材料力学性能的影响 |
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| 引用本文： | 徐金城,蒋建国,朱桐宇,徐常恩. 机械合金化对Y2O3/Cr-Ni基复合材料力学性能的影响[J]. 兰州大学学报(自然科学版), 2008, 44(5) |
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| 作者姓名： | 徐金城 蒋建国 朱桐宇 徐常恩 |
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| 作者单位： | 兰州大学,物理科学与技术学院,甘肃,兰州,730000;兰州大学,物理科学与技术学院,甘肃,兰州,730000;兰州大学,物理科学与技术学院,甘肃,兰州,730000;兰州大学,物理科学与技术学院,甘肃,兰州,730000 |
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| 摘 要： | 采用机械合金化工艺和普通粉末冶金方法分别制备了Y2O3/Cr-Ni复合材料,研究了两种制备方法对Y2O3/Cr-Ni复合材料性能的影响.结果发现:机械合金化后,粉末的衍射峰宽化、衍射峰强度降低;经压坯烧结后制备的材料,其结构与普通粉末冶金制备的相比更均匀,致密化程度也更高,材料的室温硬度和抗拉强度都比传统粉末冶金法制备的材料要高.根据Larson-Miller参数方程对两种制备方法制备的氧化钇增强镍铬基复合材料的高温力学性能进行了模拟对比研究,高温模拟结果表明,试验材料的维氏硬度值和热处理参数P基本上是一种线性关系,说明Larson-Miller参数方程对镍基复合材料的寿命设计具有一定的适用性.高温热模拟后,机械合金化工艺制备的材料仍保持着良好的力学性能.
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| 关 键 词： | 机械合金化 粉末冶金 镍基复合材料 高温热模拟 力学性能 |
Effect of mechanical alloying on the mechanical property of Y_2O_3/Cr-Ni composite |
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| XU Jin-cheng,JIANG Jian-guo,ZHU Tong-yu,XU Chan-gen. Effect of mechanical alloying on the mechanical property of Y_2O_3/Cr-Ni composite[J]. Journal of Lanzhou University(Natural Science), 2008, 44(5) |
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| Authors: | XU Jin-cheng JIANG Jian-guo ZHU Tong-yu XU Chan-gen |
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| Affiliation: | XU Jin-cheng JIANG Jian-guo ZHU Tong-yu XU Chang-en (School of Physical Science , Technology,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | Y_2O_3/Cr-Ni composites were prepared by mechanical alloying(MA)and powder metallurgy(PM) respectively.The effect of mechanical alloying on the property of Y_2O_3/Cr-Ni composite was studied.It was found that the diffraction peaks of the Ni and Cr after the mechanical alloying became wider and the intensity of diffraction peaks dropped.The density,hardness and ultimate tensile strength of the composite prepared by MA were comparatively higher than those of a composite prepared by PM at room temperature.High... |
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| Keywords: | mechanical alloying powder metallurgy Ni-based composite high temperature heat treatment mechanical property |
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