高温轧制Al-TiB2/TiC原位复合材料的显微组织及力学性能

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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 27; no. 12; pp. 2548 - 2554
Main Author 聂金凤;王芳;李玉胜;刘艳芳;刘相法;赵永好
Format Journal Article
LanguageEnglish
Published 2017
Subjects
原位复合材料;TiB2/TiC颗粒;轧制;力学性能
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ISSN1003-6326

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Bibliography:43-1239/TG
in-situ composites; TiB2/TiC particles; rolling; mechanical property
A kind of Al-TiB2/TiC in situ composite with a homogenous microstructure was successfully prepared through in situ reaction of pure Ti and Al-B-C alloy with molten aluminum.In order to improve the distribution of the particles and mechanical properties of the composites,subsequent hot rolling with increasing reduction was carried out.The microstructure evolution of the composites was characterized using field emission scanning electron microscopy(FESEM)and the mechanical properties were studied through tensile tests and microhardness measurement.It is found that both the microstructure uniformity and mechanical properties of the composites are significantly improved with increasing rolling reduction.The ultimate tensile strength and microhardness of the composites with90%rolling reduction reach185.9MPa and HV59.8,respectively,140%and35%higher than those of as-cast ones.Furthermore,the strengthening mechanism of the composite was analyzed based on the fracture morphologies.
ISSN:1003-6326