烧结温度对感应热压原位增强钛基复合材料微观结构及力学性能的影响

Influence of Sintering Temperature on the Microstructure and Mechanical Properties of In Situ Reinforced Titanium Composites by Inductive Hot Pressing.

作者信息

Arévalo Cristina, Montealegre-Meléndez Isabel, Ariza Enrique, Kitzmantel Michael, Rubio-Escudero Cristina, Neubauer Erich

机构信息

Department of Engineering and Materials Science and Transportation, School of Engineering, University of Seville, Camino de los Descubrimientos s/n, Seville 41092, Spain.

RHP-Technology GmbH, Forschungs und Technologiezentrum, Seibersdorf 2444, Austria.

出版信息

Materials (Basel). 2016 Nov 11;9(11):919. doi: 10.3390/ma9110919.

DOI:10.3390/ma9110919

PMID:28774039

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5457192/

Abstract

This research is focused on the influence of processing temperature on titanium matrix composites reinforced through Ti, Al, and B₄C reactions. In order to investigate the effect of Ti-Al based intermetallic compounds on the properties of the composites, aluminum powder was incorporated into the starting materials. In this way, in situ TiAl were expected to form as well as TiB and TiC. The specimens were fabricated by the powder metallurgy technique known as inductive hot pressing (iHP), using a temperature range between 900 °C and 1400 °C, at 40 MPa for 5 min. Raising the inductive hot pressing temperature may affect the microstructure and properties of the composites. Consequently, the variations of the reinforcing phases were investigated. X-ray diffraction, microstructural analysis, and mechanical properties (Young's modulus and hardness) of the specimens were carried out to evaluate and determine the significant influence of the processing temperature on the behavior of the composites.

摘要

本研究聚焦于加工温度对通过Ti、Al和B₄C反应增强的钛基复合材料的影响。为了研究Ti-Al基金属间化合物对复合材料性能的影响，将铝粉加入到起始材料中。通过这种方式，预期原位形成TiAl以及TiB和TiC。采用称为感应热压（iHP）的粉末冶金技术制备试样，温度范围为900℃至1400℃，压力为40MPa，持续5分钟。提高感应热压温度可能会影响复合材料的微观结构和性能。因此，研究了增强相的变化。对试样进行了X射线衍射、微观结构分析和力学性能（杨氏模量和硬度）测试，以评估和确定加工温度对复合材料性能的显著影响。