The age softening phenomenon of the Li−B alloy was investigated by a series of tensile tests under various aging conditions.The results show that the tensile strength of the rolled Li−B alloy decreases with increasing...The age softening phenomenon of the Li−B alloy was investigated by a series of tensile tests under various aging conditions.The results show that the tensile strength of the rolled Li−B alloy decreases with increasing aging time.Higher aging temperature accelerates the softening process,and leads to an early end of aging.A model was proposed to analyze the mechanism of the age softening.The vacancy annihilation is the control factor of age softening.The strength−temperature relationship was estimated by the newly proposed model and a standard heat treatment,annealing at 150℃ for 1 h,was designed to eliminate the age softening of rolled Li−B alloy.展开更多
基金Project(50172062)supported by the National Natural Science Foundation of China。
文摘The age softening phenomenon of the Li−B alloy was investigated by a series of tensile tests under various aging conditions.The results show that the tensile strength of the rolled Li−B alloy decreases with increasing aging time.Higher aging temperature accelerates the softening process,and leads to an early end of aging.A model was proposed to analyze the mechanism of the age softening.The vacancy annihilation is the control factor of age softening.The strength−temperature relationship was estimated by the newly proposed model and a standard heat treatment,annealing at 150℃ for 1 h,was designed to eliminate the age softening of rolled Li−B alloy.
