Si含量和热处理制度对铸造Al-Si合金组织和性能的影响

doi:10.13251/j.issn.0254-6051.2020.08.015

金属热处理 ›› 2020, Vol. 45 ›› Issue (8): 76-81.DOI: 10.13251/j.issn.0254-6051.2020.08.015

Si含量和热处理制度对铸造Al-Si合金组织和性能的影响

唐鹏^1,2,3,4, 刘裔源¹, 赵艳君^1,2, 胡治流^1,2, 王华春³, 彭林欣⁴, 邓松云³

1.广西大学资源环境与材料学院, 广西南宁 530003;
2.广西有色金属及特色材料加工重点实验室, 广西南宁 530004;
3.广西南南铝航空交通铝合金新材料与应用研究院, 广西南宁 530031;
4.广西大学土木建筑工程学院, 广西南宁 530004

收稿日期:2020-01-27 出版日期:2020-08-25 发布日期:2020-09-07
通讯作者: 赵艳君,副教授,博士,E-mail: zhaoyanjun71@163.com
作者简介:唐鹏(1980—),男,讲师,博士,主要研究方向为铝熔体处理及其合金强韧化,E-mail: tp@gxu.edu.cn
基金资助:
国家自然科学基金(51661004);广西自然科学基金(2017GXNSFAA198271);广西科协项目(2019ZB-11);广西大学博士启动基金(XBZ190876);广西有色金属及特色材料加工重点实验室项目(GXYSYF1812);广西教育厅科研项目(2018KY0034);广西创新驱动项目(AA17202011-1);广西生态型铝产业协同创新中心项目(20190255);南宁市优秀青年科技创新创业人才培育计划(RC20190105)

Effect of Si content and heat treatment on microstructure and properties of as-cast Al-Si alloy

Tang Peng^1,2,3,4, Liu Yiyuan¹, Zhao Yanjun^1,2, Hu Zhiliu^1,2, Wang Huachun³, Peng Linxin⁴, Deng Songyun³

1. School of Resources, Environment and Materials, Guangxi University, Nanning Guangxi 530003, China;
2. Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Nanning Guangxi 530004, China;
3. Guangxi Alnan Institute of Aerospace Transit Aluminum Alloy and Application, Nanning Guangxi 530031, China;
4. School of Civil Engineering and Architecture, Guangxi University, Nanning Guangxi 530004, China

Received:2020-01-27 Online:2020-08-25 Published:2020-09-07

摘要/Abstract

摘要： 为提高铸造Al-Si合金的力学性能,研究了Si含量和热处理制度对Al-Si合金组织和性能的影响。结果表明,Si含量、固溶冷却介质、固溶温度、时效时间、时效温度对Al-Si合金硬度的影响依次减小。Al-Si合金的最优Si含量及热处理制度为Si含量12%,480 ℃固溶120 min,盐溶液冷却及175 ℃时效90 min。随着Si含量的增加,Al-Si合金硬度和抗拉强度提升;但当Si含量超过共晶点时,方块状初生硅相析出,易形成应力集中使得合金强度降低,断裂方式由韧性断裂变为解理断裂。铸态Al-Si合金中共晶硅为长针状,经最优工艺热处理后,长针状转变为短棒或颗粒状,共晶硅更加分散,在拉伸过程中应力集中减少,位错运动阻力增加,使得Al-Si 合金的力学性能提高。

关键词: Al-Si合金, 热处理制度, Si含量, 微观组织, 力学性能

Abstract: In order to improve its mechanical properties, the effect of Si content and heat treatment on the microstructure and properties of the as-cast Al-Si alloy was studied systematically. The results show that the effect of Si content, cooling medium, solution treatment temperature, aging time and aging temperature on the hardness of the alloy decreases in turn. The optimal Si content and the optimal heat treatment process are 12% Si and solid solution treating at 480 ℃ for 120 min+salt bath cooling+aging at 175 ℃ for 90 min, respectively. With the increase of Si content, the hardness and tensile strength of the alloy increase; but when the Si content is too high, the precipitation of block-shaped primary silicon tends to form stress concentration then reduces the strength of the alloy, and the fracture mode changes from ductile fracture to cleavage fracture. The eutectic silicon in as-cast Al-Si alloy is long needle like. After using the optimal heat treatment, the long needle-like silicon transforms into short rod or granular shape, and the eutectic silicon is more dispersed, the stress concentration decreases during tension, and the dislocation movement resistance increases, all of which improve the mechanical properties of the Al-Si alloy.

Key words: Al-Si alloy, heat treatment, Si content, microstructure, mechanical properties

中图分类号:

TG166.3

唐鹏, 刘裔源, 赵艳君, 胡治流, 王华春, 彭林欣, 邓松云. Si含量和热处理制度对铸造Al-Si合金组织和性能的影响[J]. 金属热处理, 2020, 45(8): 76-81.

Tang Peng, Liu Yiyuan, Zhao Yanjun, Hu Zhiliu, Wang Huachun, Peng Linxin, Deng Songyun. Effect of Si content and heat treatment on microstructure and properties of as-cast Al-Si alloy[J]. Heat Treatment of Metals, 2020, 45(8): 76-81.

参考文献

[1]Tang Peng, Hu Zhiliu, Zhao Yanjun, et al. Investigation on the solidification course of Al-Si alloys by using a numerical Newtonian thermal analysis method[J]. Materials Research Express, 2017, 12(4): 1-9.
[2]尹昕, 尹登峰, 王凯先, 等. 添加0.2%Sn对Al-Si-Mg合金组织及力学性能的影响[J]. 金属热处理, 2020, 45(4): 16-21.
Yin Xin, Yin Dengfeng, Wang Kaixian, et al. Effect of 0.2%Sn addition on microstructure and mechanical properties of Al-Si-Mg alloy[J]. Heat Treatment of Metals, 2020, 45(4): 16-21.
[3]井婷婷, 赵玉厚, 郭永春, 等. Al-Si合金热处理工艺研究[J]. 热加工工艺, 2019, 48(24): 133-135.
Jing Tingting, Zhao Yuhou, Guo Yongchun, et al. Study on heat treatment process of Al-Si alloy[J]. Hot Working Technology, 2019, 48(24): 133-135.
[4]黄志翔, 闫洪, 王志伟. 锶变质及热处理对ADC12合金显微组织及力学性能的影响[J]. 中南大学学报, 2018, 25(6): 1263-1273.
Huang Zhixiang, Yan Hong, Wang Zhiwei. Microstructure and mechanical properties of strontium-modified ADC12 alloy processed by heat treatment[J]. Journal of Central South University, 2018, 25(6): 1263-1273.
[5]胡治流, 黄惠毅, 唐鹏, 等. Fe对Al-10Si合金微观组织和摩擦性能的影响[J]. 材料研究与应用, 2019, 13(1): 1-7.
Hu Zhiliu, Huang Huiyi, Tang Peng,et al. Effect of Fe on microstructure and tribological properties of Al-10Si alloy[J]. Materials Research and Application, 2019, 13(1): 1-7.
[6]黄元春, 杨楚戈, 刘宇, 等. 2219铝合金铸锭均匀化热处理工艺[J]. 金属热处理, 2016, 41(12): 92-97.
Huang Yuanchun, Yang Chuge, Liu Yu, et al. Homogenization heat treatment of 2219 aluminum alloy ingots[J]. Heat Treatment of Metals, 2016, 41(12): 92-97.
[7]Gupta A K, Prasad B K, Pajnoo R K, 等. T6热处理对共晶Al-Si合金力学性能、耐磨和抗蚀性能的影响[J]. 中国有色金属学报, 2012, 22(5): 1041-1050.
Gupta A K, Prasad B K, Pajnoo R K, et al. Effects of T6 heat treatment on mechanical, abrasive and erosive-corrosive wear properties of eutectic Al-Si alloy [J]. Transactions of Nonferrous Metals Society of China, 2012, 22(5): 1041-1050.
[8]孙艳容, 王杰, 杨锦, 等. 热处理制度对IN718变形合金组织和性能的影响[J]. 金属热处理, 2018, 43(12): 152-159.
Sun Yanrong, Wang Jie, Yang Jin, et al. Effect of heat treatment on microstructure and mechanical properties of IN718 deformed alloy[J]. Heat Treatment of Metals, 2018, 43(12): 152-159.
[9]Wang Kang, Tang Peng, Huang Yi,et al. Characterization of microstructures and tensile properties of recycled Al-Si-Cu-Fe-Mn alloys with individual and combined addition of titanium and cerium[J]. Scanning, 2018, 12(1): 1-9.
[10]徐松, 吉泽升, 许红雨, 等. 镁含量对挤压铸造Al-10Si-2.5Cu-xMg合金显微组织及力学性能的影响[J]. 金属热处理, 2019, 44(4): 10-14.
Xu Song, Ji Zesheng, Xu Hongyu, et al. Effect of Mg content on microstructure and mechanical properties of squeeze casting Al-10Si-2.5Cu-xMg alloy[J]. Heat Treatment of Metals, 2019, 44(4): 10-14.
[11]康福伟, 弥宁, 李晨, 等. 变质及熔体处理对过共晶铝硅合金组织的影响[J]. 哈尔滨理工大学学报, 2013, 18(4): 117-120.
Kang Fuwei, Mi Ning, Li Chen, et al. The effects of modification and melt treatment on the microstructure of hypereutectic Al-Si alloy[J]. Journal of Harbin University of Science and Technology, 2013, 18(4): 117-120.
[12]Han Nianmei, Zhang Xinming, Liu Shengdan, et al. Effects of pre-stretching and aging on the strength and fracture toughness of aluminum alloy 7050[J]. Materials Science and Engineering A, 2011, 528(10/11): 3714-3721.
[13]唐鹏, 覃皓, 赵艳君, 等. 双级时效工艺对富铁ADC12铝合金组织和硬度的影响[J]. 广西大学学报(自然科学版), 2016, 41(5): 1702-1708.
Tang Peng, Qin Hao, Zhao Yanjun, et al. Influence of duplex aging on the microstructure and hardness of Fe-rich ADC12 aluminum alloy[J]. Journal of Guangxi University, 2016, 41(5): 1702-1708.
[14]Dang Bo, Jian Zengyun, Xu Junfeng, et al. Effect of phosphorus and heat treatment on microstructure of Al-25%Si alloy[J]. China Foundry, 2017, 14(1): 10-15.
[15]田振乾, 魏坤霞, 魏伟, 等. 深冷处理铝硅合金的微观组织与力学性能[J]. 金属热处理, 2017, 42(2): 54-58.
Tian Zhenqian, Wei Kunxia, Wei Wei, et al. Microstructure and mechanical properties of Al-Si alloy by deep cryogenic treatment[J]. Heat Treatment of Metals, 2017, 42(2): 54-58.
[16]Tang Peng, Li Wenfang, Wang Kang, et al. Effect of Al-Ti-C master alloy addition on microstructures and mechanical properties of cast eutectic Al-Si-Fe-Cu alloy[J]. Materials and Design, 2017, 115(2): 147-157.
[17]朱上, 李志辉, 闫丽珍, 等. Zn添加对预时效态Al-Mg-Si-Cu合金自然时效和烘烤硬化性的影响[J]. 金属学报, 2019, 55(11): 1395-1406.
Zhu Shang, Li Zhihui, Yan Lizhen, et al. Effects of Zn addition on the natural aging behavior and bake hardening response of a pre-aged Al-Mg-Si-Cu alloy[J]. Acta Metallurgica Sinica, 2019, 55(11): 1395-1406.

Si含量和热处理制度对铸造Al-Si合金组织和性能的影响

Effect of Si content and heat treatment on microstructure and properties of as-cast Al-Si alloy

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	梁恩溥, 徐乐, 杨勇, 王毛球. 添加Al、Cu对40CrNi3MoV钢组织和力学性能的影响[J]. 金属热处理, 2022, 47(4): 17-23.
[2]	祁晓亮, 李岩, 定巍, 赵增武. 含Al中锰TRIP钢原始组织对临界退火后组织与力学性能的影响[J]. 金属热处理, 2022, 47(4): 24-29.
[3]	陈保安, 张静媛, 祝志祥, 韩钰, 潘学东, 张磊, 陈素红. 化学成分对高强Al-Mg-Si合金组织和性能的影响[J]. 金属热处理, 2022, 47(4): 30-38.
[4]	陈东俊, 李广阳, 刘刚. 时效处理对AlSi9Cu3压铸铝合金组织和力学性能的影响[J]. 金属热处理, 2022, 47(4): 53-56.
[5]	陈连生, 张露友, 田亚强, 杨子旋, 李红斌, 潘红波, 魏英立. 低碳高强舰船用钢的CCT曲线及其组织性能[J]. 金属热处理, 2022, 47(4): 63-68.
[6]	王云龙, 余伟, 张昳, 史佳新, 李明辉. 奥氏体化温度对贝氏体钢等温转变及力学性能的影响[J]. 金属热处理, 2022, 47(4): 80-85.
[7]	骆再斌, 范子泽, 彭振. 轻质高熵合金的研究进展[J]. 金属热处理, 2022, 47(4): 100-107.
[8]	李立, 曾艳, 吴晓春. 4Cr5Mo2VCo钢的热处理工艺优化[J]. 金属热处理, 2022, 47(4): 133-140.
[9]	吕杰晟, 宋志刚, 何建国, 丰涵, 郑文杰, 朱玉亮. S32205双相不锈钢冷轧退火组织转变及强塑化机理分析[J]. 金属热处理, 2022, 47(4): 141-145.
[10]	王琪, 吴光亮. 回火温度对1100 MPa级高强钢组织与性能的影响[J]. 金属热处理, 2022, 47(4): 146-150.
[11]	张骥俊, 邢彦锋, 曹菊勇. 超声振动对CMT电弧增材制造铝合金组织与性能的影响[J]. 金属热处理, 2022, 47(4): 159-164.
[12]	刘文彬, 乔龙阳, 潘新宇, 程格, 李爱娜, 裴新军. 淬火温度对刀剪用M390粉末冶金不锈钢组织和性能的影响[J]. 金属热处理, 2022, 47(4): 189-195.
[13]	王瑞琴, 葛鹏, 廖强, 侯鹏, 刘宇. 固溶冷却方式对短时用高温钛合金板材组织和性能的影响[J]. 金属热处理, 2022, 47(4): 196-198.
[14]	王绍灼, 孟晗, 王芬, 樊海卫, 李燕, 唐超. 改善低氧TC4-LC及重熔TC4钛合金性能的热处理工艺[J]. 金属热处理, 2022, 47(4): 204-207.
[15]	陈强, 陈林芳, 杨明华. 18CrNiMo7-6钢的可控气氛高温渗碳工艺[J]. 金属热处理, 2022, 47(4): 231-239.