The effect of thermal aging of homogenized Fe-Au and Fe-Au-W alloys, irradiated at room temperature with hydrogen ions, was studied for an aging treatment at 300 °C for aging times up to 100 h. The aging behavior of the Fe-based alloys is compared to the results for pure Fe. The precipitation behavior of Au-rich and W-rich precipitates and its correlation to the H⁺ irradiation-induced defects is investigated by variable energy positron annihilation spectroscopy (VEPAS). The formation of open-volume defects after irradiation is monitored by an increase in the S parameter, while the recovery of the vacancy-like defects and the formation of precipitates are signalled by an increase in the W parameter. Au-rich precipitation continuously develops during long-term aging, as indicated by the increase in the W parameter. The change of the W parameter in the Fe-Au-W alloy is not only due to the effect of solute W on the Au precipitates, but also because of the interface of W-rich Laves phase with matrix.

研究了在室温下用氢离子辐照的均质 Fe-Au 和 Fe-Au-W 合金的热时效效应，该合金在 300°C 下进行时效处理，时效时间长达 100 小时。将铁基合金的时效行为与纯铁的结果进行比较。通过可变能量正电子湮没光谱 (VEPAS) 研究了富 Au 和富 W 沉淀物的沉淀行为及其与 H ⁺辐照诱导缺陷的相关性。辐照后开放体积缺陷的形成通过S参数的增加来监测，而空位状缺陷的恢复和沉淀物的形成则通过W的增加来表示范围。W参数的增加表明，在长期老化过程中，富金沉淀不断发展。Fe-Au-W 合金中 W 参数的变化不仅是由于溶质 W 对 Au 析出物的影响，还因为富 W Laves 相与基体的界面。