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在生产工业纯铝的电解槽添加 Ti O2 ,直接电解得到含钛量低于 0 .3%的电解低钛铝合金 ,用它替代工业纯铝熔配含钛的 ZL 10 8合金 ,记作 ZL 10 8Ti.分别熔配 ZL 10 8和 ZL 10 8Ti两种合金 ,用金属模具浇铸三点弯曲试样 ,并采用相同的热处理和机加工工艺制备对比试验的试样 .在 MTS810型材料试验机上测量两种合金的平面应变断裂韧度 ,分别得到 ZL 10 8合金的 KIC=(18.9± 0 .6 ) MPa· m1 / 2 ,ZL 10 8Ti的 KIC=(2 0 .0± 0 .5 ) MPa· m1 / 2 .试验结果经 t分布的显著性检验确认 :电解加钛改进了 ZL 10 8合金的断裂韧性 .金相分析进一步揭示了电解加钛细化晶粒 ,使 ZL 10 8合金增韧的微观机理 .
In the production of industrial pure aluminum electrolyzer Ti O2 added, the direct electrolysis to obtain a titanium content of less than 0.3% of the electrolytic titanium alloy with aluminum instead of industrial pure aluminum alloy with titanium melt ZL 10 8 alloy, recorded as ZL 10 8Ti. Two alloys, ZL 10 8 and ZL 10 8Ti, were respectively melted, three-point bending specimens were cast using a metal mold and the specimens of the comparative tests were prepared using the same heat treatment and machining process. Measurements were made on a MTS 810 material tester The plane strain fracture toughness of the two alloys respectively obtained KIC = (18.9 ± 0.6) MPa · m1 / 2 for ZL108 alloy and KIC = (200.0 ± 0.5) MPa for ZL108Ti m1 / 2.Test results confirmed by the significance of t distribution test confirmed: electrolysis of titanium to improve the fracture toughness of ZL 10 8 alloy.Metal analysis further reveals the electrolysis plus titanium refinement of the grain, the ZL 10 8 alloy toughening Micro-mechanism.