Effect of Multi-pass Friction Stir Processing on Microstructures and Mechanical Behaviors of As-Cast 2A14 Aluminum Alloy
Effect of Multi-pass Friction Stir Processing on Microstructures and Mechanical Behaviors of As-Cast 2A14 Aluminum Alloy
复制标题
多道次搅拌摩擦加工对铸态2A14铝合金显微组织和力学行为的影响
DOI：
10.1007/s11665-021-05594-7
复制
发表时间：
2021-03
影响因子：
2.3
通讯作者：
Jiahao Zhou
中科院分区：
文献类型：
--
作者：
Jian Wang;Dongshuai Zhou;Li Xie;Xingcheng Li;Yalin Lu;Zhihao Bai;Jiahao Zhou
采用100%重叠的多道次搅拌摩擦工艺对2A14铝合金铸态板材进行1~3道次的变质处理。综合评价了搅拌摩擦焊道次对搅拌区组织演变和力学行为的影响。结果表明，由于动态再结晶（DRX），SZ中形成了明显细化的等轴晶，大角度晶界占主导地位。随着道次的增加，晶粒尺寸减小，隧道缺陷减少，第二相颗粒细化且分布均匀。此外，剪切织构组分CandA1 * 是通过动态再结晶在SZ中产生的。与铸态合金相比，由于在FSP过程中形成了具有随机取向的再结晶晶粒，SZ的织构强度显著降低。此外，由于晶粒细化、颗粒破碎和铸造缺陷的消除，两道次FSP（2P FSP）试样的强度和塑性得到了有效的提高。2P FSP试样的抗拉强度和伸长率分别达到391.6MPa和10.8%，比BM试样的177.23MPa和3.24%分别提高了120.9和232.1%。同时，硬度测试结果表明，2P FSP不仅提高了SZ的显微硬度，而且增加了SZ的宽度。
Multi-pass friction stir processing with 100% overlap was applied to modify the as-cast 2A14 aluminum alloy plate through one to three passes. The effects of the number of FSP passes on microstructural evolution and mechanical behaviors of the stir zone (SZ) were comprehensively evaluated. The results indicated that obvious refined equiaxed grains with predominant high angle grain boundaries were formed in the SZ due to dynamic recrystallization (DRX). The grain size and tunnel defects decreased, while the second-phase particles are refined and distributed evenly as the number of passes increased. Moreover, the shear texture components ofCandA1* are produced in the SZ through the DRX. As compared to as-cast alloy, the texture intensity of SZ is significantly reduced due to the formation of recrystallized grains with random orientation during FSP. Additionally, the effective improvement of strength and ductility was achieved in the two passes FSP (2P FSP) sample because of the grain refinement, fragmented particles and the elimination of casting defects. The ultimate tensile strength and elongation of 2P FSP sample reach up to 391.6 MPa and 10.8%, which are 120.9, 232.1% higher than that of the BM (177.23 MPa and 3.24%), respectively. Meanwhile, the hardness test results evidenced that 2P FSP not only enhances the microhardness, but also increases the width of SZ.
登录
查看更多内容
焊接参数对2060铝锂合金搅拌摩擦焊接头组织及力学性能的影响
DOI：
10.1007/s00170-015-7191-2
发表时间：
2015-11-01
影响因子：
3.4
作者：
Mao, Yuqing;Ke, Liming;Liu, Qiang
通讯作者：
Liu, Qiang
影响因子：
6.2
作者：
Yuxun Zhang;Yin Youping;Hua Shiquan;D. Fei;Huimin Wang
通讯作者：
Yuxun Zhang;Yin Youping;Hua Shiquan;D. Fei;Huimin Wang
影响因子：
4.7
作者：
A. Orozco-Caballero;P. Hidalgo-Manrique;C. Cepeda-Jiménez;P. Rey;D. Verdera;O. Ruano;F. Carreño
通讯作者：
A. Orozco-Caballero;P. Hidalgo-Manrique;C. Cepeda-Jiménez;P. Rey;D. Verdera;O. Ruano;F. Carreño
影响因子：
2.3
作者：
Jian Wang;Yalin Lu;Dongshuai Zhou;Yang Zhang;Z. Bai;Xing-cheng Li
通讯作者：
Jian Wang;Yalin Lu;Dongshuai Zhou;Yang Zhang;Z. Bai;Xing-cheng Li
DOI：
10.1016/j.msea.2007.01.141
发表时间：
2007-08
影响因子：
6.4
作者：
L. B. Johannes;R. Mishra
通讯作者：
L. B. Johannes;R. Mishra