Influence of tool pin profile on mechanical and metallurgical behavior of friction stir welded AA6061-T6 and AA2017-T6 tailored blanks

被引：11

作者：

Battina, N. Malleswararao ^{[1
]}

Vanthala, Varaha Siva Prasad ^{[1
]}

Chirala, Hari Krishna ^{[2
]}

机构：

[1] Andhra Univ, Marine Engn Dept, Vishakhapatnam, India

[2] Shri Vishnu Engn Coll Women, Mech Engn Dept, Bhimavaram, India

来源：

ENGINEERING RESEARCH EXPRESS | 2021年 / 3卷 / 03期

关键词：

aluminium alloys; Tailor welded blanks; tool pin profiles; mechanical properties; macrostructure; microstructure; TENSILE-STRENGTH; ALUMINUM; MICROSTRUCTURE; FORMABILITY; GEOMETRY; HARDNESS; ALLOYS; JOINTS;

D O I：

10.1088/2631-8695/ac1a5a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The heat-treated and artificially aged aluminium alloys of AA6061 and AA2017 are friction stir welded by employing five different tool pin profiles keeping the other process parameters constant. From this investigation, the mechanical properties of welded blanks were evaluated. The test results revealed that the straight square tool pin profile exhibited a higher ultimate tensile strength of 253 MPa with a tensile elongation of 6.7%. Higher Microhardness and joint efficiency were reported compared to other pin profiles. The microstructures at different zones of the welded joint were examined using optical and scanning electron microscopy. More Flowability indications with fine grain structure were examined for a straight square tool pin profile. The presence of intermetallic and the formation of fine-grain structures were accountable for the improvement in microhardness. The pulsating action of the square pin profile produced a defect-free joint.

引用

页数：15

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