Corrosion Properties of a Ti-15Mo/TiB Composite Produced by Spark Plasma Sintering

被引：1
作者：
Ozerov, M. [1 ]
Gazizova, M. [1 ]
Zherebtsova, N. [1 ]
Stepanov, N. [1 ]
Zherebtsov, S. [1 ]
机构：
[1] Belgorod State Univ, Belgorod 308015, Russia
来源：
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2019 | 2019年 / 2167卷
基金：
俄罗斯科学基金会;
关键词：
METAL-MATRIX COMPOSITE; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TITANIUM; EVOLUTION;
D O I：
10.1063/1.5132127
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Corrosion properties of Ti-15Mo/TiB metal-matrix composite in the initial as-sintered condition and after multiaxial forging (MAF) at 700 degrees C were studied in comparison with commercially pure (CP) Ti and Ti-15wt.% Mo alloy. All the specimens were produced by spark plasma sintering at 1400 degrees C using corresponding powder mixtures. Both CP hcp Ti and bcc Ti-15Mo had microstructures with a grain (or colonies of lamellae) size of similar to 20 mu m. Microstructure of the as-sintered composites consisted of TiB whiskers heterogeneously distributed within the bcc Ti matrix. Intensive shortening of TiB whiskers occurred during the MAF. Hardness of Ti increased due to an addition of Mo; hardness of the composites increased further in comparison with Ti-15Mo. After MAF the hardness did not change noticeably. Corrosion tests conducted using the electrochemical method showed some improvement due to an addition of Mo and TiB reinforcements into the Ti matrix. MAF also increased corrosion properties, however the development of pitting corrosion at potentials E approximate to 4000 mV can be expected.
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页数：5
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