[1]尹冬松,张 宁,张游游,等.Ti对Al-5.6Zn-2.5Mg-1.6Cu-0.2Zr合金微观组织和高温力学性能的影响[J].黑龙江科技大学学报,2021,31(05):648-652.[doi:10.3969/j.issn.2095-7262.2021.05.017 ]
 Yin Dongsong,Zhang Ning,Zhang Youyou,et al.Effect of Ti on microstructure and high temperature mechanical properties of Al-5.6Zn-2.5Mg-1.6Cu-0.2Zr Alloy[J].Journal of Heilonhjiang Institute of Science and Technology,2021,31(05):648-652.[doi:10.3969/j.issn.2095-7262.2021.05.017 ]
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Ti对Al-5.6Zn-2.5Mg-1.6Cu-0.2Zr合金微观组织和高温力学性能的影响()
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《黑龙江科技大学学报》[ISSN:2095-7266/CN:2301588/TD]

卷:
31
期数:
2021年05
页码:
648-652
栏目:
出版日期:
2021-09-30

文章信息/Info

Title:
Effect of Ti on microstructure and high temperature mechanical properties of Al-5.6Zn-2.5Mg-1.6Cu-0.2Zr Alloy
文章编号:
2095-7262(2021)05-0648-05 文献标志码:A
作者:
尹冬松 张 宁 张游游 王 锰
(黑龙江科技大学 材料科学与工程学院, 哈尔滨 150022)
Author(s):
Yin Dongsong Zhang Ning Zhang Youyou Wang Meng
(School of Materials Science & Engineering, Heilongjiang University of Science & Technology, Harbin 150022, China)
关键词:
铝合金 Ti 微观组织 高温力学性能
Keywords:
aluminum alloy Ti microstructure high temperature mechanical properties
分类号:
TG146.21
DOI:
10.3969/j.issn.2095-7262.2021.05.017
文献标志码:
A
摘要:
为研究添加Ti对Al-Zn-Mg-Cu-Zr铝合金微观组织和高温力学性能的影响,利用蔡司金相显微镜、扫描电子显微镜和X射线衍射仪分析微观组织及相组成,通过电子万能试验机测试其力学性能。结果表明:Al-Zn-Mg-Cu-Zr铝合金晶粒尺寸为166.6 μm,添加质量分数1%的Ti后,晶粒得到明显的细化,当添加质量分数2%的Ti时,晶粒得到进一步细化,平均晶粒尺寸为65.4 μm; Al-Zn-Mg-Cu-Zr合金主要存在α-Al、MgZn2和Al2CuMg相,MgZn2和Al2CuMg相主要分布在晶界处,同时以颗粒状析出在基体上,添加Ti元素后,合金基体上出现块状的Al3(TixZrx-1)相,晶界处形成了连续的网状相,Zn、Mg、Cu、Ti呈弥散分布。当添加1%Ti时,高温力学性能最好,抗拉强度、屈服强度和伸长率分别为227.6、174.8 MPa和4%。
Abstract:
This paper aims to investigate the effect of Ti addition on the microstructure and high temperature mechanical properties of Al-Zn-Mg-Cu-Zr aluminum alloy. The investigation is achieved by using Zeiss advanced metallurgical microscope to observe the microstructure of the alloy, using scanning electron microscope and X-ray diffractometer to analyze microstructure and phase composition, and using electronic universal testing machine to test mechanical performance. The results show that the grain size of Al-Zn-Mg-Cu-Zr aluminum alloy is 166.6 μm. The addition of Ti with a mass fraction of 1% allows the grains to be significantly refined; the addition of Ti with a mass fraction of 2%, allows the grains to be further refined, with the average grain size being 65.4 μm. Al-Zn-Mg-Cu-Zr alloys mainly contain α-Al, MgZn2 and Al2CuMg phases and MgZn2 and Al2CuMg phases are mainly distributed at the grain boundaries, accompanied by the precipitation on the matrix in the form of particles. The addition of Ti is followed by the typical occurrence of the Bulk Al3(TixZrx-1)phase on alloy matrix, resulting in the formation of continuous network phase at the grain boundaries and leaving Zn、Mg、Cu and Ti dispersedly distributed. 1% Ti addition produces the best high temperature mechanical properties, with 227.6、174.8 MPa and 4%, respectively for the tensile strength、yield strength, and elongation.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2021-05-15
基金项目: 黑龙江省自然科学基金联合引导项目(LH2019E082); 黑龙江省应用技术研究与开发计划项目(GC13A104)
第一作者简介: 尹冬松(1974-),男,黑龙江省庆安人,教授,博士,研究方向:轻质合金材料,E-mail:dongsongyin@126.com。
编辑 李德根
更新日期/Last Update: 2021-09-25