钛和锶对舰船用ER4043铝合金焊丝显微组织和性能的影响
Effect of Ti and Sr on properties and microstructures of ER4043 aluminum alloy welding wire
-
摘要: 研究了元素Ti,Sr变质对舰船用ER4043铝合金焊丝的显微组织以及焊缝力学性能的影响. 结果表明,钛的加入不仅能细化α-Al基体,还能变质共晶硅,促使粗大的片状或针状共晶硅转变为短棒状,提高4043合金轧杆以及接头的抗拉强度,并且当添加量为0.08%(质量分数)时接头强度达到166 MPa,比未变质4043焊缝接头强度提高5.7%;单独添加锶对α-Al晶粒的细化效果更为明显,共晶硅相以粒状均匀分布,并且当Sr元素的添加量为0.02%时,焊缝抗拉强度达到最大值187 MP,比未变质4043焊缝接头强度提高19.1%;通过数据对比可以发现,锶对4043的变质效果明显优于钛对4043的变质效果.Abstract: The effects of the addition of Ti and Sr on the microstructure of ER4043 aluminum alloy welding wire and its tensile strength of butt-welded joints with ER4043 as consumable were investigated. Experimental results show that adding a small amount of Ti can refine α-Al matrix and modify the eutectic silicon, leading to a change in the morphology of eutectic silicon from the large brittle flake or acicular to fine fibrous morphology, thas resulted in the improvement of the mechanical properties of ER4043 aluminum rod and butt-welded joint. When the content of Ti was at 0.08%, the tensile strength of the joint reached 166 MPa which is 5.7% higher than that of unmodified ER4043 aluminum alloy welding wire. With the appropriate addition of Sr the refinement of α-Al was more obvious and the granular eutectic silicon phases evenly distributed. Moreover, when the content of Sr was at 0.02%, the tensile strength of the welded joint reached the maximum value 187 MPa, which enhanced 19.1% compared with the joint welded with unmodified ER4043 aluminum alloy wire. By comparing the data as mentioned above, it can be found that the modification effect of Sr on the ER4043 aluminum alloy is significantly superior to that of Ti.
-
Keywords:
- Ti /
- Sr /
- 4043 aluminum alloy wire /
- microstructure /
- mechanical property
-
-
[1] 孙乎浩, 薛松柏, 冯晓梅, 等. 舰船用6082铝合金TIG焊组织与力学性能分析[J]. 焊接学报, 2014, 35(2): 91-94. Sun Huhao, Xue Songbai, Feng Xiaomei, et al. Microstructure and mechanical properties of weld joint of marine 6082 aluminum allou by TIG welding[J]. Transactions of the China Welding Institution, 2014, 35(2): 91-94. [2] 戴 玮, 薛松柏, 孙 波, 等. Cu-P变质对Al-Si-Zn钎料钎缝组织的影响[J]. 焊接学报, 2013, 34(11): 53-56. Dai Wei, Xue Songbai, Sun Bo, et al. Microstructure of Al-Si-Zn filler metal and brazed seam modified with Cu-P[J]. Transactions of the China Welding Institution, 2013, 34(11): 53-56. [3] 张 帅, 薛松柏, 杨金龙, 等. P元素对Al-Si-Zn钎料显微组织及性能的影响[J]. 焊接学报, 2013, 34(5): 103-107. Zhang Shuai, Xue Songbai, Yang Jinlong, et al. Effect of P element on microstructure and properties of Al-Si-Zn filler metal[J]. Transactions of the China Welding Institution, 2013, 34(5): 103-107. [4] Sun Yu, Pang Shaoping, Liu Xueran, et al. Nucleation and growth of eutectic cell in hypoeutectic Al-Si alloy[J]. Transactions of Nonferrous Metals Society of China, 2011, 10: 2186-2191. [5] Lü L,Nogita K, Dahle A K. Combining Sr and Na additions in hypoeutectic Al-Si foundry alloys[J]. Materials Science and Engineering A, 2005, 399(1/2): 244-253. [6] 赵延阔, 李红英, 王晓峰, 等. 不同变质剂对4032铝合金变质效果的影响[J]. 中南大学学报(自然科学版), 2011, 42(2): 361-367. Zhao Yankuo, Li Hongying, Wang Xiaofeng, et al. Effects of different modifiers on modification efficiency of 4032 aluminum alloy[J]. Journal of Central University (Science and Technology), 2011, 42(2): 361-367. [7] Farahany S, Ourdjini A, Idris M H, et al. Effect of bismuth on microstructure of unmodified and Sr-modified Al-7Si-0.4 Mg alloys[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(7): 1455-1464. -
期刊类型引用(5)
1. 李波，马鑫，张军，武鹏博，刘铁君，刘阳. 铝合金焊丝送丝稳定性测试分析. 焊接. 2024(07): 74-80 . 
百度学术
2. 胡高斌，钱勇武，钟治琨，彭浩，薛泳泳，陆伟. 汽轮机用铝/钢接头MAO层结构和腐蚀性能分析. 电镀与精饰. 2023(01): 33-38 . 百度学术
3. 李健，张猛，吕亚君. 4043铝合金焊材生产关键技术研究. 云南冶金. 2023(02): 90-95 . 百度学术
4. 乔波，战中学，张登峰，高世鹰，刘春兰，邬富宝，张世全，郑宏伟，王晓婷，李庭. 4043铝合金热变形行为和热加工图. 热加工工艺. 2019(19): 104-106+109 . 百度学术
5. 路全彬，龙伟民，钟素娟，高雅，张强. 铝合金焊接材料制备研究现状与发展. 焊接. 2016(02): 6-9+69 . 百度学术
其他类型引用(7)
计量
- 文章访问数: 549
- HTML全文浏览量: 24
- PDF下载量: 154
- 被引次数: 12
下载:
