The mechanical responses and structure variations of Ta_(80)Co_(20)nanoscale metallic glass(MG)film samples upon cryogenic thermal cycling(CTC)treatment were studied.The simultaneous improvements of strength and defor...The mechanical responses and structure variations of Ta_(80)Co_(20)nanoscale metallic glass(MG)film samples upon cryogenic thermal cycling(CTC)treatment were studied.The simultaneous improvements of strength and deformation ability bring about a super-high strength of 4.5 GPa and a large plastic strain of about 80%after CTC treatment.The significant increase in inter-element bonding and hardness makes the activation and percolation of sheartransformation zones to be more difficult and delays theyielding event,leading to the ultra-high strength.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.52301210,52101191,52071222 and 52261033)Guangdong Major Project of Basic and Applied Basic Research,China(No.2019B030302010)the Excellent PhD Innovation Program of Xinjiang University(No.XJU2023BS029)。
文摘The mechanical responses and structure variations of Ta_(80)Co_(20)nanoscale metallic glass(MG)film samples upon cryogenic thermal cycling(CTC)treatment were studied.The simultaneous improvements of strength and deformation ability bring about a super-high strength of 4.5 GPa and a large plastic strain of about 80%after CTC treatment.The significant increase in inter-element bonding and hardness makes the activation and percolation of sheartransformation zones to be more difficult and delays theyielding event,leading to the ultra-high strength.
