Internal friction measurement on hydrogen-induced cold work peak in Fe-0.5wt%Ti alloy is reported.The character of the peak is determined and compared with that in pure iron.The activation energy for the peak has been...Internal friction measurement on hydrogen-induced cold work peak in Fe-0.5wt%Ti alloy is reported.The character of the peak is determined and compared with that in pure iron.The activation energy for the peak has been obtained.The binding energy between hydrogen atoms and dislocations is estimated from the result of isothermal aging experiment.展开更多
The application of laser surface melting in the laser heat treatment of high speedsteel causes low hardness, so the subsequent quenching and tempering processesare needed. And by means of transformation hardening tech...The application of laser surface melting in the laser heat treatment of high speedsteel causes low hardness, so the subsequent quenching and tempering processesare needed. And by means of transformation hardening techniques, ultrahighhardness 】HV1000 can be obtained.In this case, the subsequent quenching pro-cess can be saved, and the wear and scuffing resistances can be considerably im-proved. However, the laser transformation hardening mechanism has not beenunderstood clearly. The laser transformation hardening mechanism of high speedsteel W<sub>6</sub>Mo<sub>5</sub>Cr<sub>4</sub>V<sub>2</sub> has been studied in the present note by TEM and X-ray diffractionmethod in order to provide a theoretical basis for application.展开更多
文摘Internal friction measurement on hydrogen-induced cold work peak in Fe-0.5wt%Ti alloy is reported.The character of the peak is determined and compared with that in pure iron.The activation energy for the peak has been obtained.The binding energy between hydrogen atoms and dislocations is estimated from the result of isothermal aging experiment.
文摘The application of laser surface melting in the laser heat treatment of high speedsteel causes low hardness, so the subsequent quenching and tempering processesare needed. And by means of transformation hardening techniques, ultrahighhardness 】HV1000 can be obtained.In this case, the subsequent quenching pro-cess can be saved, and the wear and scuffing resistances can be considerably im-proved. However, the laser transformation hardening mechanism has not beenunderstood clearly. The laser transformation hardening mechanism of high speedsteel W<sub>6</sub>Mo<sub>5</sub>Cr<sub>4</sub>V<sub>2</sub> has been studied in the present note by TEM and X-ray diffractionmethod in order to provide a theoretical basis for application.
