Mechanical Behavior of Ti-48Al-2Mn-2Nb Alloy Produced by Centrifugal Spray Deposition(Mechanical Behavior of Materials 2)

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  • Chen Wenzhe
    College of Materials Science &Engineering, Fuzhou University
  • Peng Kaiping
    College of Materials Science &Engineering, Fuzhou University
  • Chen Xingpin
    College of Materials Science &Engineering, Fuzhou University
  • Qian Kuang-Wu
    College of Materials Science &Engineering, Fuzhou University

抄録

The mechanical behavior of Ti-48Al-2Mn-2Nb alloy produced by centrifugal spray deposition (CSD) was investigated. Tensile, compression and fracture toughness tests of CSD Ti-48Al-2Mn-2Nb alloy were carried out at room temperature (RT), and the comparison was made with the ingot metallurgy (IM) Ti-48Al-2Mn alloy at RT, as well as at 600 and 800℃. The results show that CSD Ti-48Al-2Mn-2Nb alloy exhibits a better elongation of 2.8%, and excellent compression properties with compressive strength of 2210MPa and compressive ratio of 33.9% at room temperature, furthermore, higher compressive strength of 2625 MPa and better compressive ratio of 58.8% at 600℃. CSD alloy with a refined lamellar structure exhibits higher tensile and compressive properties and better plastic strain ability than that of IM alloy. CSD alloy also has a better fracture toughness of 23.6 MPa √<m> at RT, however, the IM alloy with coarse lamellar structure exhibits higher fracture toughness of 25.34 MPa √<m> at RT, and 31.5 MPa √<m> at 800℃.

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