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以ZrTiAlV合金为研究对象,对热轧工艺过程中不同Al含量对ZrTiAlV合金力学性能和结构的影响进行研究。结果表明:在Al含量较低时,合金中的微观组织主要为既粗大又长的β相和极少量细小的α相,随Al含量增加,合金中细小的α相不断增加,而粗大β相逐渐减少;当铝含量增加到5.6%时,其显微组织主要为针状α相和少量的粗大初始的β相;当铝含量增加到6.9%时,其显微组织为β相、等轴的α相及(ZrTi)3Al化合物。随Al含量增加,合金屈服强度和极限抗拉强度也逐渐增加,但伸长率却逐渐减小,当Al含量为3.3%时,合金屈服强度为560 MPa;当Al含量增加到6.9%时,合金屈服强度高达1190 MPa,但其伸长率仅为3%;当Al含量为3.3%到5.6%时,该合金具有良好的力学性能。
Taking ZrTiAlV alloy as the research object, the effects of different Al contents on the mechanical properties and structure of ZrTiAlV alloy during hot-rolling process were studied. The results show that the microstructure of the alloy is mainly coarse and long β phase and a small amount of fine α phase when Al content is low. With the increase of Al content, the fine α phase in the alloy increases continuously, while the coarse β phase When the aluminum content increased to 5.6%, the microstructure was mainly acicular α phase and a small amount of coarse initial β phase. When the aluminum content was increased to 6.9%, the microstructure was β phase and the equiaxed Of α phase and (ZrTi) 3Al compounds. With the increase of Al content, the yield strength and ultimate tensile strength of the alloy also increased gradually, but the elongation decreased gradually. When the Al content was 3.3%, the yield strength of the alloy was 560 MPa. When the Al content increased to 6.9% The yield strength of the alloy reaches as high as 1190 MPa, but its elongation is only 3%. When the Al content is 3.3% to 5.6%, the alloy has good mechanical properties.