Influence of tool rotational speed on Microstructure and Mechanical Properties of Al-Li Alloy using Friction Stir Welding

被引：8

作者：

Kumar, Sanjeev ^{[1
]}

Katiyar, Jitendra Kumar ^{[2
]}

Acharya, Uttam ^{[3
]}

Saha, Subash Chandra ^{[1
]}

Roy, Barnik Saha ^{[1
]}

机构：

[1] Natl Inst Technol Agartala, Dept Mech Engn, West Tripura 799046, India

[2] SRM Inst Sci & Technol, Dept Mech Engn, Chennai, Tamil Nadu, India

[3] Amity Univ, Dept Mech & Automat Engn, ASETK, Kolkata, India

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING | 2022年 / 236卷 / 05期

关键词：

2050 al-li alloy; friction stir welding; tool rotational speed; force and torque; microstructure; mechanical properties; CORROSION BEHAVIOR; ALUMINUM-ALLOY; HEAT-TREATMENT; CU; TEMPERATURE; EVOLUTION; FORCE; GENERATION; PARAMETERS; NUGGET;

D O I：

10.1177/09544089221080823

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Al-Li alloy is one of the suitable materials to be used in the aerospace industry due to its unique physical, mechanical, fatigue and corrosion resistance properties. The present study investigates the effect of rotational tool speed (TRS) on force and torque and its consequences on heat input, temperature, microstructure, and mechanical properties of a 5 mm thick 2050-T84 Al-Li alloy plates in square butt joint configuration. The investigation reveals defect-free welds at TRS ranging from 600 rpm to 1400 rpm. The grain size at nugget zone (NZ) and thermo-mechanically affected zone (TMAZ) increases (10.59 mu m-16.79 mu m; TMAZ-AS; 12.67 mu m-18.96 mu m and TMAZ-RS; 12.22 mu m-17.98 mu m) with an increase in TRS (600-1400 rpm). The high ultimate tensile strength (UTS-410MPa) and % elongation (11.15%) was observed at 1400 rpm. With the help of scanning electron microscope (SEM) analysis of tensile fracture samples, the ductile nature of tensile fracture is observed.

引用

页码：2106 / 2117

页数：12

共 52 条

[51] Influence of tool rotational speed on local microstructure, mechanical and corrosion behavior of dissimilar AA2024/7075 joints fabricated by friction stir welding [J].