scholarly journals Microstructural Evolution and Hardness of Dissimilar Lap Joints of ODS/Stainless Steel by Friction Stir Welding

2013 ◽  
Vol 54 (2) ◽  
pp. 215-221 ◽  
Author(s):  
Chun-Liang Chen ◽  
Asta Richter ◽  
Lung-Tien Wu ◽  
You-Ming Dong
Keyword(s):  
Stainless Steel ◽  
Friction Stir Welding ◽  
Microstructural Evolution ◽  
Lap Joints ◽  
Friction Stir ◽  
Ods Stainless Steel

Role of Overlap Ratio on the Microstructure of Friction Stir Multiseam Cladded Copper-Stainless Steel Lap Joints

2020 ◽  
Vol 979 ◽  
pp. 102-106
Author(s):  
A.K. Lakshminarayanan ◽  
K. L. Harikrishna
Keyword(s):  
Stainless Steel ◽  
Friction Stir Welding ◽  
Microstructural Analysis ◽  
Lap Joints ◽  
Dissimilar Welding ◽  
Copper Sheet ◽  
Practical Applications ◽  
Friction Stir ◽  
Overlap Ratio ◽  
Welding Processes

Dissimilar welding of copper to stainless steel using conventional welding processes usually exhibits defects such as solidification cracks, lack of fusion and deterioration in mechanical properties due to the difference in the base metal properties. This is mainly due to minimum solubility of copper in stainless steel. Use of solid state welding such as friction stir welding can be potential solution to this problem. This study is carried out with the aim of cladding copper sheet on a stainless steel by friction stir welding variant known as friction stir cladding. Considering practical applications, to clad copper over stainless steel sheet, multi seam friction stir cladding procedure must be adopted. Though many parameters need to be considered, overlap ratio is one of significant factor which affects the microstructure of clad joints. Hence, five overlap ratios namely 0%, 25 %, 50 %, 75% and 100 % were used to fabricate the dissimilar friction stir copper-stainless steel clad joints. Microstructural analysis was carried out at different regions of clad joints using optical microcopy and correlated with bond strength values

A study on the effect of cooling on microstructure and mechanical properties of friction stir-welded AA5086 aluminum butt and lap joints

2017 ◽  
Vol 233 (6) ◽  
pp. 1156-1165 ◽  
Author(s):  
Adel Sedaghati ◽  
Hamed Bouzary
Keyword(s):  
Mechanical Properties ◽  
Friction Stir Welding ◽  
Feed Rate ◽  
Rotational Speed ◽  
Lap Joints ◽  
Tensile Behavior ◽  
Water Cooling ◽  
Friction Stir ◽  
Microstructural Behavior ◽  
Constant Feed Rate

In this paper, the effect of water cooling on mechanical properties and microstructure of AA5086 aluminum joints during friction stir welding is investigated. For doing so, the mechanical and microstructural behavior of samples welded both in air and in water was analyzed. Tests were performed involving both butt and lap welds and the results were compared. The effect of rotational speed at constant feed rate of 50 mm/min and changing rotational speed ranging from 250 to 1250 r/min was investigated. The results showed a significant change in the tensile behavior of the butt-welded specimens due to water cooling. In addition, welding was performed at constant spindle speed of 800 r/min and various traverse speeds (25 mm/min to 80 mm/min) to determine the effect of feed rate. The strength increases at first, but then decreases dramatically along with the feed rate which is due to the occurrence of a groove defect. Results showed some generally positive impacts of water cooling which are discussed in terms of tensile results, hardness distributions and microstructure analysis.

scholarly journals Friction stir welding of 304 stainless steel using Ir based alloy tool

2011 ◽  
Vol 29 (4) ◽  
pp. 305-311 ◽  
Author(s):  
Tomoaki MIYAZAWA ◽  
Yuichi IWAMOTO ◽  
Tomohiro MARUKO ◽  
Hidetoshi FUJII
Keyword(s):  
Stainless Steel ◽  
Friction Stir Welding ◽  
304 Stainless Steel ◽  
Friction Stir ◽  
Alloy Tool
Sign in / Sign up

Export Citation Format

Share Document