Mg-Al-Sn钎料及其AZ61A镁合金钎焊接头组织性能分析
Microstructure and properties of Mg-Al-Sn filling metal and solder joint of AZ61A magnesium alloy
-
摘要: 采用扫描电镜、X射线衍射分析、热分析等手段分析了Mg58.5Al31.5Sn10和Mg58.5Al31.5Sn10RE两种钎料及其钎焊AZ61A镁合金对接接头组织性能. 结果表明，Mg58.5Al31.5Sn10钎料及其钎缝组织主要由块状Mg2Sn和(Mg17Al12+Mg2Sn)二元共晶相组成，并含有少量三元共晶相(Mg17Al12+Mg2Sn+α-Mg). Mg58.5Al31.5Sn10RE钎料及其钎缝组织中未发现块状Mg2Sn相，其组织主要由(Mg17Al12+Mg2Sn+α-Mg)三元共晶和(Mg17Al12+Mg2Sn)二元共晶相及少量Al-RE组成. 和Mg58.5Al31.5Sn10钎料相比，Mg58.5Al31.5Sn10RE组织更加均匀细小，固液相线温度明显降低，熔程缩短了6 ℃，铺展面积提高了5.4%，对接接头平均抗拉强度提高了8.6%，二者拉伸断口形貌均呈现为脆性断裂.Abstract: The filling metals of Mg58.5Al31.5Sn10 and Mg58.5Al31.5Sn10RE were prepared. The microstructure and properties of the filling metals and the corresponding butt joints of AZ61A magnesium alloy were investigated by analysis methods including SEM, XRD, DSC, wetting and tensile strength test, etc. The results have shown that the microstructures of Mg58.5Al31.5Sn10 filling metal and its joint mainly consist of massive Mg2Sn, binary eutectic phase of Mg17Al12and Mg2Sn, and a small amount of ternary eutectic phase of Mg17Al12, Mg2Sn andα-Mg. However, the microstructures of Mg58.5Al31.5Sn10RE filling metal and its joint chiefly comprise ternary eutectic phase of Mg17Al12, Mg2Sn andα-Mg, binary eutectic phase of Mg17Al12and Mg2Sn, and a small amount of Al-RE phase. Compared with Mg58.5Al31.5Sn10, the microstructure of Mg58.5Al31.5Sn10RE is more homogeneous and finer, solid-liquid phase line temperatures obviously decrease, the melting temperature range shorts 6 ℃, and the spreading area increases by 5.4%. The butt joint average tensile strength of AZ61A magnesium alloy with Mg58.5Al31.5Sn10RE filling metal raises by 8.6% than that of with Mg58.5Al31.5Sn10RE. The butt joints of both filling metals exhibit the brittle fracture morphology.
-
-
[1] 王立志, 贺定勇, 蒋建敏, 等. 镁合金钎焊材料研究进展[J]. 焊接, 2007(8): 9-14.Wang Lizhi, He Dingyong, Jiang Jianmin,et al. Research progress of magnesium alloy brazing filler metals[J]. Welding & Joining. 2007(8): 9-14.[2] Ma L, He D Y, Li X Y,et al. Characterization of high-frequency induction brazed magnesium alloy joint with an Al-Mg-Zn filler metal[J]. Journal of Materials Engineering and Performance, 2010, 20(2)： 219-222.[3] Watanabe T, Komatsu S, Oohara K. Development of flux and filler metal for brazing magnesium alloy AZ31B[J]. Welding Research, 2005(5): 37-40.[4] Ma L, He D Y, Li X Y. High-frequency induction soldering of magnesium alloy AZ31B using a Zn-Al filler metal[J]. Materials Letters， 2010(64)： 596-598.[5] Ma L, He D Y, Li X Y,et al. Microstructure and mechanical properties of magnesium alloy AZ31B brazed joint using a zn-mg-al filler metal[J]. Science Direct, 2010, 26(8): 743-746.[6] 刘 蓉, 柯黎明, 孙德超. Mg-Al-Zn基钎料合金的研究[J]. 南昌航空大学学报(自然科学版), 2007, 21(4): 53-56.Liu Rong, Ke Liming, Sun Dechao. Research of Mg-Al-Zn-based brazing filler metals[J]. Journal of Nanchang Institute of Aeronautical Technology(Natural Science Edition), 2007, 21(4): 53-56.[7] Villars P, Prince A, Okamoto H. Handbook of ternary alloy phase diagrams[M]. ASM international, 1995.[8] 张菊梅, 蒋百灵, 王志虎, 等. 固溶和时效对AZ80镁合金断裂行为的影响[J]. 特种铸造及有色合金, 2007, 27(9): 663-666.Zhang Jumei, Jiang Bailing, Wang Zhihu,et al. Effect of solid solution and aging on AZ80 magnesium alloy abruption behavior[J]. Special-cast and Non-ferrous Alloys., 2007, 27(9): 663-666.[9] 李卓然, 矫 宁, 冯吉才, 等. 合金元素对AgCuZn系钎料合金组织与性能的影响[J]. 焊接学报, 2008, 29(3): 65-68.Li Zhuoran, Jiao Ning, Feng Jicai,et al. Effect of alloying elements on microstructure and property of AgCuZnSn brazing alloy[J]. Transactions of the China Welding Institution, 2008, 29(3): 65-68.[10] 鲍 丽, 龙伟民, 张冠星, 等. 微量Ca元素对AgCuZn钎料性能的影响[J]. 焊接学报, 2012, 33(12): 57-60.Bao Li, Long Weimin, Zhang Guanxing,et al. Effects of trace calcium on performance of AgCuZn alloy[J]. Transactions of the China Welding Institution, 2012, 33(12): 57-60.[11] 甘俊雄, 张 帆, 韩修柱, 等. 混合稀土对AZ80镁合金显微组织和力学性能的影响[J]. 兵器材料科学与工程, 2015, 38(1): 81-85.Gan Junxiong, Zhang Fan, Han Xiuzhu,et al. Effect of RE on microstructure and mechanical properties for AZ80 magnesium alloy[J]. Ordnance Material Science and Engineering, 2015, 38(1): 81-85.[12] 马 力, 贺定勇, 李晓延, 等. Al-Mg-Zn钎料钎焊镁合金AZ31B接头的显微组织和性能[J]. 焊接学报, 2009， 30(11): 61-64.Ma Li, He Dingyong, Li Xiaoyan,et al. Microstructure and mechanical properties of magnesium alloy AZ31B joint brazed with Al-Mg-Zn filler metal[J]. Transactions of the China Welding Institution, 2009， 30(11): 61-64. -
期刊类型引用(7)
1. 张普，曹四龙. Al_2O_3+TiO_2复合颗粒对激光熔覆Inconel 718基润滑涂层显微组织及高温磨损行为的影响研究. 材料保护. 2024(06): 8-19 . 
百度学术
2. 魏来，李丹，董振. 原位自生(Ti, V)C堆焊层的耐磨性能. 沈阳工业大学学报. 2023(01): 43-47 . 百度学术
3. 刘海浪，卢儒学，陈健，徐珖韬，张倩. 镍基合金电子束熔覆表面改性及高温耐磨性研究. 金属热处理. 2021(04): 161-166 . 百度学术
4. 吴雁楠，黄诗铭，朱平，马振一，兰博，何翰伟，郝博文. 原位碳化钛颗粒增强镍基喷焊层的组织与性能. 热加工工艺. 2021(22): 96-98+102 . 百度学术
5. 马强，陈明宣，孟君晟，李成硕，史晓萍，彭欣. 纯铜表面氩弧熔覆TiB_2/Ni复合涂层组织及耐磨性能. 焊接学报. 2021(09): 90-96+102 . 本站查看
6. 王永东，杨在林，张宇鹏，朱艳. Y_2O_3对原位自生TiC增强Ni基涂层组织和性能影响. 焊接学报. 2020(02): 53-57+100 . 本站查看
7. 陈鹏涛，曹梅青，吕萧，仇楠楠. 氩弧熔敷原位合成ZrC-TiB_2增强铁基涂层的组织与性能. 上海金属. 2020(05): 15-20 . 百度学术
其他类型引用(2)
计量
- 文章访问数: 724
- HTML全文浏览量: 13
- PDF下载量: 1
- 被引次数: 9
下载:
