Role of Various Tool Pin Profiles in Friction Stir Welding of AA2024 Alloys

被引：18
作者：
Singh, Bharat [1 ]
Saxena, Kuldeep K. [1 ]
Singhal, Piyush [1 ]
Joshi, Tilak C. [2 ]
机构：
[1] GLA Univ, Dept Mech Engn, Mathura 281406, UP, India
[2] CSIR, Adv Construct Mat Div, Adv Mat & Proc Res Inst, Bhopal 462026, India
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2021年 / 30卷 / 11期
关键词：
dynamic recrystallization; EBSD; friction stir welding; grain refinement; impact Energy; material testing; pin profile; MECHANICAL-PROPERTIES; MICROSTRUCTURAL EVOLUTION; TENSILE PROPERTIES; PROCESS PARAMETERS; ALUMINUM; BEHAVIOR; SPEED; FSW; ARMOR;
D O I：
10.1007/s11665-021-06017-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In FSW, tool pin profile has a significant contribution on mechanical and microstructural properties of metallic joints. In the present work, various pin profiles such as conical, pedal, cylindrical with thread, triangular, square and pentagonal pins are used to join the AA2024 plates. Mechanical and microstructural characterization is done for welded plates using different pin profile tools. The mechanical properties such as percentage elongation, ultimate tensile strength (UTS), microhardness and impact strength are significantly improved, when plates are joined using square pin profile. The obtained joint efficiency is 78% using square pin profile tool. The percentage elongation, UTS and impact energy of joint made by square pin tool are measured as 15%, 362 MPa and 5.7 Joule, respectively, which are higher than the values obtained using other pin profiles. EBSD analysis was performed to know the microstructural changes, which are a cause of mechanical properties alteration. Analysis reveals that stirred zone exhibits the recrystallized fine grains with equiaxed structure, which is a result of dynamic recrystallization and heating during plastic deformation of the zone. Large fraction of HAGB is also observed in stirred zone, which is a cause of improved mechanical properties of the joint.
引用
收藏
页码：8606 / 8615
页数：10
相关论文
共 47 条
[41]  
Thomas W.M., 1991, Great Britain Patent, Patent No. [9125978.8, 91259788]
[42]   Optimization of Process Parameters for Al6061-Al7075 alloys in Friction Stir Welding using Taguchi's Technique [J].
Ugrasen, G. ;
Bharath, G. ;
Kumar, Kishor G. ;
Sagar, R. ;
Shivu, P. R. ;
Keshavamurthy, R. .
MATERIALS TODAY-PROCEEDINGS, 2018, 5 (01) :3027-3035
[43]   Effect of fusion welding processes on tensile properties of armor grade, high thickness, non-heat treatable aluminium alloy joints [J].
Vasu, K. ;
Chelladurai, H. ;
Ramaswamy, Addanki ;
Malarvizhi, S. ;
Balasubramanian, V .
DEFENCE TECHNOLOGY, 2019, 15 (03) :353-362
[44]   Influence of tool pin profile on the metallurgical and mechanical properties of friction stir welded Al-10 wt.% TiB2 metal matrix composite [J].
Vijay, S. J. ;
Murugan, N. .
MATERIALS & DESIGN, 2010, 31 (07) :3585-3589
[45]   Grain structure and dislocation density measurements in a friction-stir welded aluminum alloy using X-ray peak profile analysis [J].
Woo, Wanchuck ;
Balogh, Levente ;
Ungar, Tamas ;
Choo, Hahn ;
Feng, Zhili .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 498 (1-2) :308-313
[46]   On the effect of tool offset in hybrid-FSW of copper-aluminium alloy [J].
Yaduwanshi, D. K. ;
Bag, S. ;
Pal, S. .
MATERIALS AND MANUFACTURING PROCESSES, 2018, 33 (03) :277-287
[47]   Strategies for Improving Tensile Ductility of Bulk Nanostructured Materials [J].
Zhao, Yonghao ;
Zhu, Yuntian ;
Lavernia, Enrique J. .
ADVANCED ENGINEERING MATERIALS, 2010, 12 (08) :769-778
12345