Effects of heat treatment parameters on the microstructure and mechanical properties of in situ TiBw/Ti6Al4V composite with a network architecture
Effects of heat treatment parameters on the microstructure and mechanical properties of in situ TiBw/Ti6Al4V composite with a network architecture
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热处理参数对原位TiBw/Ti6Al4V网络结构复合材料显微组织和力学性能的影响
DOI：
10.1016/j.matdes.2011.12.021
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发表时间：
2012-04-01
影响因子：
8.4
通讯作者：
Geng, L.
中科院分区：
文献类型：
--
作者：
Huang, L. J.;Xu, H. Y.;Geng, L.
原位5体积%为进一步提高TiB晶须增强Ti6 Al 4V（TiBw/Ti64）复合材料的力学性能，对TiBw/Ti64复合材料进行了不同工艺参数的热处理。显微组织结果表明，随着淬火温度的升高，基体中转变的β相的比例增加，这导致室温和高温强度显着提高。随着时效温度的升高，由马氏体相转变而来的细小α + β相的尺寸和比例均增大，从而降低了复合材料的强度。当测试温度低于600摄氏度时，5vol. %采用适当的工艺参数对TiBw/Ti64复合材料进行水淬和时效处理，可显著提高复合材料的力学性能。这可归因于在网状边界强化效应的基础上的上级热处理强化效应。皇冠版权所有（C）2011由爱思唯尔有限公司出版。保留所有权利。
In situ 5 vol.% TiB whiskers reinforced Ti6Al4V (TiBw/Ti64) composites with a network architecture were heat treated with different parameters in order to further improve their mechanical properties. The microstructure results showed that the fraction of the transformed beta phase in the matrix increases with increasing quenching temperatures, which leads to a significant improvement in strength at room and high temperatures. Both the size and fraction of fine alpha + beta phases transformed from martensite phase increase with increasing aging temperatures, which decreases the strength of the composite. When the testing temperature is lower than 600 degrees C, the strength of the 5 vol.% TiBw/Ti64 composite is significantly enhanced by heat treatment consisting of water quenching and aging processes with proper parameters. This can be attributed to the superior heat treatment strengthening effect on the basis of the network boundary strengthening effect. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.