放电等离子烧结制备钛基复合材料及其力学性能研究

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摘要本文采用放电等离子烧结法制备了(TiC+TiB)/TC4复合材料，首先对球磨工艺进行了优化，并研究了烧结温度对钛基复合材料物相组成、微观结构和力学性能的影响。结果表明， 200r/min球磨8小时为最佳球磨参数，既可以将增强相粘附到基体粉末表面，又不会破坏分体形貌。采用SPS温度为1000-1150℃原位合成制备出5vol.%(TiC+TiB)/TC4复合材料，TiCp和TiBw呈准连续的网状结构分布在晶界处。随着SPS温度的升高，复合材料的强度和工程应变先增加后减少，并在1100 ℃时均达到最大1722MPa和28.31%，以此确定了最佳的SPS温度。

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	宋光远
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关键词 ： SPS, 球磨工艺, 烧结温度, 微观结构, 力学性能

Abstract：This article uses discharge plasma sintering method to prepare (TiC+TiB)/TC4 composite materials. Firstly, the ball milling process was optimized, and the effect of sintering temperature on the phase composition, microstructure, and mechanical properties of titanium based composite materials was studied. The results indicate that the optimal ball milling parameter is 200r/min ball milling for 8 hours, which can adhere the reinforcing phase to the surface of the matrix powder without damaging the morphology of the particles. 5vol.% was prepared by in-situ synthesis using SPS at temperatures ranging from 1000 to 1150 ℃ (TiC+TiB)/TC4 composite material, TiCp and TiBw exhibit a quasi continuous network structure distributed at grain boundaries. As the SPS temperature increases, the strength and engineering strain of the composite material first increase and then decrease, reaching a maximum of 1722MPa and 28.31% at 1100 ℃, thus determining the optimal SPS temperature.

Key words： SPS Ball milling process sintering temperature Microstructure mechanical property

收稿日期: 2023-05-29 出版日期: 2024-02-22

基金资助:钒钛资源综合利用国家重点实验室开放基金课题

通讯作者: 雷鹰 E-mail: leiyingahut@163.com

引用本文:

宋光远雷鹰陶磊李雨雍超. 放电等离子烧结制备钛基复合材料及其力学性能研究[J]. , 2024, 31(1): 0-0.

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http://edit.chinamet.cn/Jweb_jsgncl/CN/ 或 http://edit.chinamet.cn/Jweb_jsgncl/CN/Y2024/V31/I1/0

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