(中南工業(yè)大學粉末冶金國家重點實驗室，長沙 410083)
摘 要: 研究了合金元素Nb，Mo，V和Ni對Laves相TiCr2室溫力學性能的影響，測量了抗壓斷裂強度、抗壓斷裂應變、顯微硬度及斷裂韌性。 結果表明，這些元素都能改善TiCr2的室溫力學性能，其中Nb的作用較小，而V和Ni的作用較大，明顯地降低抗壓斷裂強度和顯微硬度，提高斷裂韌性。
關鍵字: Laves相 TiCr2 增塑 增韌 力學性能
（State Key Laboratory for Powder Metallurgy,Central South University of Technology, Changsha 410083, P. R. China）
Abstract:An investigation was undertaken to study the effects of adding Nb, Mo, V or Ni on the room temperature mechanical properties of the Laves phase TiCr2. The compressive fracture strength, the compressive fracture strain, microhardness and fracture toughness were determined for the unalloyed and alloyed TiCr2. Results show that the addition of alloying elements Nb, Mo, V or Ni has good effects on mechanical properties of TiCr2 at room temperature. Among them, Nb has less effects, while V and Ni have stronger effects, i.e., obviously decrease the compressive fracture strength and microhardness of the Laves phase TiCr2, and increase its fracture toughness.
Key words: Laves phase TiCr2 plasticity toughness mechanical properties
