论文部分内容阅读
采用销-盘法研究了直径?3 mm Ti_(35)Zr_(30)Be_(24)Cu_(7.5)Co_(3.5)块体非晶合金及其经623 K和653 K退火1 h后的耐磨性,利用SEM分析了磨损形貌。结果表明,经磨损后,试样磨损面显微硬度略有提高,有加工硬化现象出现;623 K温度下退火1 h后,相组成与铸态同为非晶相,试样磨损以局部剪切的塑性流变为主,磨损机制为疲劳磨损;随着温度提高到653 K退火1 h后,合金由部分非晶相及纳米相组成,显微硬度突升到1 042 HV,磨损以碎片剥落及犁沟为主,磨损机制为磨粒磨损。
The pin-plate method was used to study the mechanical properties of 3 mm Ti 35 Zr 30 Cu 24 Cu 7.5 Co 3.5 bulk amorphous alloy and its resistance to annealing at 623 K and 653 K for 1 h Abrasiveness, the wear morphology was analyzed by SEM. The results show that after the wear, the microhardness of the wear surface slightly increases, and the work hardening phenomenon appears. After annealed at 623 K for 1 h, the phase composition and the as-cast amorphous phase are the same. When the temperature is increased to 653 K and annealed for 1 h, the alloy consists of some amorphous phase and nanophase, the microhardness suddenly rises to 1 042 HV, and the wear is fragmented Spalling and furrow-based wear mechanism for abrasive wear.