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使用不同的时效温度和淬火温度对Al-Mg-Si-Mn-In新型建筑铝型材进行了热处理,并对表面硬度和力学性能进行了测试与分析。结果表明:在450℃×0.5h淬火,时效时间6h时,随着时效温度从130℃提高至190℃,新型建筑铝型材的表面硬度、抗拉强度和屈服强度均先提高后下降,断后伸长率先基本不变后下降;在淬火保温时间0.5h,时效170℃×6h时,随淬火温度从400℃提高至500℃,新型建筑铝型材的表面硬度、抗拉强度、屈服强度和断后伸长率均先提高后下降。时效温度优选为170℃、淬火温度优选为450℃。此工艺下,新型建筑铝型材的硬度、抗拉强度、屈服强度和断后伸长率分别达到48HV、273MPa、188MPa、16.4%。
The new Al-Mg-Si-Mn-In aluminum profiles were heat treated with different aging temperature and quenching temperature, and the surface hardness and mechanical properties were tested and analyzed. The results show that the surface hardness, tensile strength and yield strength of the new aluminum profile firstly increase and then decrease with the aging temperature increased from 130 ℃ to 190 ℃ at 450 ℃ for 0.5h and the aging time is 6h. When the quenching holding time is 0.5h and the aging is 170 ℃ × 6h, the surface hardness, tensile strength, yield strength and elongation at break of the new building aluminum profile increase with the quenching temperature from 400 ℃ to 500 ℃. The length of the first increase after the decline. The aging temperature is preferably 170 ° C and the quenching temperature is preferably 450 ° C. Under this process, the hardness, tensile strength, yield strength and elongation at break of the new type of construction aluminum alloy reach 48HV, 273MPa, 188MPa and 16.4% respectively.