| 强化固溶对含Sr2099型铝锂合金腐蚀性能的影响 |
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| 引用本文： | 张振强,许晓静,宋涛,王彬,张允康,罗勇,吴桂潮. 强化固溶对含Sr2099型铝锂合金腐蚀性能的影响[J]. 材料热处理学报, 2012, 33(8): 96-99 |
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| 作者姓名： | 张振强 许晓静 宋涛 王彬 张允康 罗勇 吴桂潮 |
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| 作者单位： | 江苏大学先进成形技术研究所,江苏镇江,212013 |
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| 基金项目： | 江苏省工业科技支撑计划项目，江苏大学拔尖人才培养工程基金 |
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| 摘 要： | 采用金相显微镜、扫描电子显微镜和Х射线衍射仪显微分析技术,研究了强化固溶工艺对含Sr 2099(Al-2.52Cu-1.87Li-1.19Zn-0.497Mg-0.309Mn-0.0825Zr-0.0605Sr)型铝锂合金抗晶间腐蚀和抗剥落腐蚀性能的影响。结果表明:与常规固溶(540℃×2 h)+T8时效(121℃×14 h+151℃×48 h)工艺相比,强化固溶(540℃×2 h+550℃×2.67 h)+T8时效(121℃×14 h+151℃×48 h)工艺显著减少了合金中的粗大未溶相,再结晶程度提高,细化了晶粒,且促进等轴晶的形成。按晶间腐蚀标准(GB7998-2005)和剥落腐蚀标准(GB/T 22639-2008),强化固溶+T8时效工艺降低了该合金的抗晶间腐蚀能力,但显著提高了该合金的抗剥落腐蚀能力。
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| 关 键 词： | Sr 2099铝锂合金 强化固溶 晶间腐蚀 剥落腐蚀 |
Effect of enhanced solid solution on corrosion behavior of Sr microailoyed 2099 alloy |
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| ZHANG Zhen-qiang,XU Xiao-jing,SONG Tao,WANG Bin,ZHANG Yun-kang, LUO Yong,WU Gui-chao. Effect of enhanced solid solution on corrosion behavior of Sr microailoyed 2099 alloy[J]. Transactions of Materials and Heat Treatment, 2012, 33(8): 96-99 |
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| Authors: | ZHANG Zhen-qiang XU Xiao-jing SONG Tao WANG Bin ZHANG Yun-kang LUO Yong WU Gui-chao |
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| Affiliation: | (Institute of Advanced Forming Technology,Jiangsu University,Zhenjiang 212013,China) |
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| Abstract: | The effects of enhanced solid solution treatment on intergranular corrosion and exfoliation corrosion behavior of Sr microalloyed 2099(Al-2.52Cu-1.87Li-1.19Zn-0.497Mg-0.309Mn-0.0825Zr-0.0605Sr) Al-Li alloy were investigated by means of optical microscope,SEM and XRD.The results show that compared to the conventional solid solution treatment(540 ℃×2 h) plus T8 aging(121 ℃×14 h+151 ℃×48 h),enhanced solid solution(540 ℃×2 h+550 ℃×2.67 h) plus T8 aging can decrease coarse precipitated phases significantly,promote recrystallization,refine grains and increase the formation of equiaxed grains of the 2099-Sr Al-Li alloy.It is found that enhanced solid solution plus T8 aging decreases the resistance of intergranular corrosion,but improves the resistance of exfoliation corrosion for 2099-Sr Al-Li alloy. |
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| Keywords: | Sr 2099Al-Li alloy enhanced solid solution intergranular corrosion exfoliation corrosion |
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