温度对2297-T87铝锂合金拉伸性能的影响及不同温度拉伸后的显微组织
Effect of Temperature on Tensile Properties and Microstructure after Tensile at Different Temperatures of 2297-T87 Al-Li Alloy
摘 要
对2297-T87铝锂合金在25~175℃下进行了拉伸试验，研究了温度对该合金拉伸性能的影响，观察了拉伸后的显微组织。结果表明：随着温度升高，合金的抗拉强度和屈服强度降低，伸长率增大；当温度升至175℃时，合金的抗拉强度和屈服强度为室温（25℃）时的77.72%和82.03%，合金仍具有较高的强度；在25~175℃拉伸后，合金的显微组织相似，均主要由轧制变形晶粒和少量细小再结晶晶粒组成。
拉伸性能
抗拉强度
显微组织
2297 Al-Li alloy
tensile property
tensile strength
microstructure
Abstract
Tensile tests at 25-175℃ were carried out on 2297-T87 Al-Li alloy. The effect of temperature on tensile property of the alloy were studied and the microtructures after tensile were observed. The results show that with the increase of temperature, the tensile strength and yield strength of the alloy decreased, and the elongation increased. When the temperature rose to 175℃, the tensile strength and yield strength of the alloy were 77.72% and 82.03% of the tensile strength and yield strength at room temperature(25℃), and the alloy still had relatively high strength. The microstructures of the alloys were similar, and they were mainly composed of rolling deformed grains and a small amount of fine recrystallized grains.
中图分类号 TG146.2 DOI 10.11973/jxgccl201905011
所属栏目 材料性能及应用
基金项目 国家自然科学基金资助项目（51474195，51374187，51474101）
收稿日期 2018/8/16
修改稿日期 2019/3/28
网络出版日期
作者单位点击查看
备注姚泽(1986-),男,山西运城人,工程师,学士
引用该论文: YAO Ze,ZHONG Liwei,FENG Zhaohui,ZHU Congcong,GAO Wenli. Effect of Temperature on Tensile Properties and Microstructure after Tensile at Different Temperatures of 2297-T87 Al-Li Alloy[J]. Materials for mechancial engineering, 2019, 43(5): 54～57
姚泽,钟立伟,冯朝辉,朱聪聪,高文理. 温度对2297-T87铝锂合金拉伸性能的影响及不同温度拉伸后的显微组织[J]. 机械工程材料, 2019, 43(5): 54～57
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【10】王海, 魏芬绒, 邓家彬, 等. 影响钛合金屈强比的因素及作用机理探讨[J]. 热加工工艺, 2016, 45(22):109-111.
【11】伊琳娜, 李国爱, 王亮, 等. 7D04-T7451铝合金高温性能及组织变化特征[J]. 轻合金加工技术, 2017, 45(10):61-66.
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