Mechanical Properties of MMC Based on Ti Alloy(Composite 3)

抄録

The purpose of this study is to investigate static mechanical properties of Ti-alloy matrix composite fabricated by HIP treatment. Ti-6Al-4V alloy and W short fiber were used for matrix and reinforcement, respectively. This MMC has been processed two kinds of secondary working. Secondary works are rotary-swaging or shape-forging. Ti-6Al-4V alloy is known as one of representative Ti-alloys and W short fiber possesses excellent mechanical properties, such as high tensile strength, hardness number and high melting temperature. According to these experimental results, it is found that hardness and tensile strength of this material increases with the increase in volume fraction of W short fiber. Tensile strength of shape forging material is lower than rotary-swaging one. In addition, the highest value of tensile strength achieved among the metal matrix composites for this material is 1520MPa under the condition of W fiber volume fraction of V_f=9% (secondary working is rotary-swaging).