A COMPARATIVE ANALYSIS AMONG THE WELDED Al-6061 PLATES JOINED BY FSW, MIG AND TIG WELDING METHODS

IF 1.1 Q3 METALLURGY & METALLURGICAL ENGINEERING

Acta Metallurgica Slovaca Pub Date : 2023-06-20 DOI:10.36547/ams.29.2.1778

Aaluri Praveen Reddy, Saurabh Dewangan

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引用次数: 1

Abstract

The present work deals with assessment of tensile strength, hardness, fracture behavior and microstructural changes in welded Al-6061 plates. MIG welding has been done with filler rod whereas no filler metal has been applied during TIG welding for comparing the results with FSW, a filler-less solid-state welding. The ultimate tensile strength (UTS) of MIGW sample has been found 75% and 111% higher than that of FSW and TIGW samples respectively. Also, the elongation shown by MIG joint is nearly 50% higher than that of other two welds. The tensile properties of two non-filler welds, i.e., FSW and TIG have been found similar. The fractography results have established the ductile behavior of all the three joints. The primary phase (bright Al-grains) of base metal zone (BM) with thin solid boundary has changed into thick dendritic shapes in the welded zone (WZ). Also, the coarse secondary phase of BM has converted into fine particle in WZ under the influence of rapid cooling. The WZ has been reported harder than HAZ in MIG and FSW plates whereas the HAZ of TIGW plate has been found harder than WZ due to accumulation of fine equiaxed secondary phase.

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摘要对FSW、MIG和TIG三种焊接方法对Al-6061钢板的焊接效果进行了对比分析

本工作对焊接的Al-6061板的抗拉强度、硬度、断裂行为和微观结构变化进行了评估。MIG焊接是用填充棒进行的，而在TIG焊接过程中没有使用填充金属，以将结果与FSW（一种无填充物的固态焊接）进行比较。MIGW试样的极限抗拉强度分别比FSW和TIGW试样高75%和111%。MIG焊接接头的伸长率比其他两种焊缝高出近50%。FSW和TIG两种非填充焊缝的拉伸性能相似。断口分析结果确定了所有三个接头的韧性行为。在焊接区（WZ），具有薄固体边界的母材区（BM）的初生相（亮Al晶粒）已转变为厚树枝状。此外，在快速冷却的影响下，BM的粗二次相在WZ中转化为细颗粒。据报道，MIG和FSW板中的WZ比HAZ更硬，而TIGW板的HAZ由于细小的等轴二次相的积累而比WZ更硬。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Metallurgica Slovaca METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

2.00

自引率

30.00%

发文量

审稿时长

12 weeks