| 铁含量对铸态铝铁合金力学性能及组织的影响 |
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| 引用本文： | 郑文悦,陈庆吟,洪静,侯嘉鹏,王强,张哲峰.铁含量对铸态铝铁合金力学性能及组织的影响[J].金属热处理,2021,46(4):26-29. |
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| 作者姓名： | 郑文悦 陈庆吟 洪静 侯嘉鹏 王强 张哲峰 |
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| 作者单位： | 1.浙江华电器材检测研究所有限公司 国家电力器材产品安全性能质量监督检验中心, 浙江 杭州 310015; 2.浙江华云清洁能源有限公司, 浙江 杭州 310002; 3.中国科学院金属研究所 材料疲劳与断裂实验室, 辽宁 沈阳 110016 |
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| 基金项目： | 国家电网浙江省电力公司项目(5211HD190002);中国博士后科学基金(2019M661151) |
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| 摘 要： | 采用拉伸试验机、光学显微镜、扫描电镜、X射线衍射仪和三维纳米X射线显微镜等分析手段研究了铁含量对铸态Al-Fe合金力学性能和微观组织结构的影响。结果表明:随着铁含量的增大,铸态Al-Fe合金抗拉强度和屈服强度增大,断后伸长率下降。大量的球状Al6Fe析出相和杆状Al3Fe析出相分布在试验合金铸锭晶界附近,与铸态Al-1.8Fe合金相比,铸态Al-2.6Fe合金具有更小尺寸的晶粒和更大尺寸的Al3Fe析出相。尺寸更小的晶粒导致铸态Al-2.6Fe合金的强度高于铸态Al-1.8Fe合金,而铸态Al-2.6Fe合金伸长率更低的主要原因是具有更大尺寸的脆性Al3Fe析出相。
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| 关 键 词： | 铝铁合金 力学性能 晶粒 析出相 |
| 收稿时间： | 2020-12-15 |
Effect of Fe content on mechanical properties and microstructure of as-cast Al-Fe alloy |
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| Zheng Wenyue,Chen Qingyin,Hong Jing,Hou Jiapeng,Wang Qiang,Zhang Zhefeng.Effect of Fe content on mechanical properties and microstructure of as-cast Al-Fe alloy[J].Heat Treatment of Metals,2021,46(4):26-29. |
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| Authors: | Zheng Wenyue Chen Qingyin Hong Jing Hou Jiapeng Wang Qiang Zhang Zhefeng |
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| Affiliation: | 1. National Quality Supervision & Inspection Center of Electrical Equipment Safety Performance, Zhejiang Huadian Equipment Testing Institute Co., Ltd., Hangzhou Zhejiang 310015, China; 2. Zhejiang Huayun Clean Energy Co., Ltd., Hangzhou Zhejiang 310002, China; 3. Laboratory of Fatigue and Fracture for Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China |
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| Abstract: | Effect of Fe content on mechanical properties and microstructure of as-cast Al-Fe alloy was studied by tensile testing machine, optical microscope, scanning electron microscopy, X-ray diffracter and three-dimensional nano-X-ray microscope. The results show that with the increase of Fe content, the tensile strength and yield strength of as-cast Al-Fe alloy increase, while the elongation decreases. A large number of spherical precipitates of Al6Fe and rod-shaped precipitates of Al3Fe are distributed near the grain boundary of the tested alloy ingots. Compared with the as-cast Al-1.8Fe alloy, the as-cast Al-2.6Fe alloy has finer grains and larger size precipitates of Al3Fe. And the finer grains lead to the higher strength of as-cast Al-2.6Fe alloy than that of as-cast Al-1.8Fe alloy. The main reason for the lower elongation of as-cast Al-2.6Fe alloy is the larger size of brittle precipitate of Al3Fe. |
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| Keywords: | Al-Fe alloy mechanical properties grain precipitated phase |
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