PARAMETRIC EFFECTS ON MECHANICAL AND METALLURGICAL PROPERTIES OF ROTARY FRICTION WELDED UNS S30400 & UNS S31803 TUBES
Author(s):
Savitharoja P, Deepak Kumar M
Keywords:
Rotary friction welding, Dissimilar welding, Austenitic stainless steel, Duplex stainless steel, Design of experiment, Micro-examination.
Abstract
Welding industry has been continuously facing challenges when it comes to improving productivity, efficiency, and quality of the products being manufactured. There is limitation in conventional welding because most metal combinations are not compactible when using conventional method. One of the factors that make rotary friction welding popular among manufacturers is its unique ability to join dissimilar metals. Both Austenitic stainless steel(ASS) and Duplex stainless steel (DSS) have mainly used in the area of natural gas pipe lines and oil, marine etc. because its enhanced corrosive resistance and good strength. In the present study, the dissimilar welding of AISI 304 and AISI 2205 pipes were carried out by rotary friction welding process. The welded joints were created by changing friction pressure, friction time, upset pressure and upset time while rotational speed was kept as constant. The dissimilar welded specimens were characterized through tensile test and microstructure examination. And also examine the optimized welding parameter by using design of experiments (DOE). From DOE the parameter effects were analyzed using ANOVA and it was shown that upset pressure and friction time has greater influence over tensile strength. The mixture of fine re-crystallized grains were observed in the weld zone and finer deformed grains were observed in partially deformed zone.
Article Details
Unique Paper ID: 161632

Publication Volume & Issue: Volume 10, Issue 5

Page(s): 328 - 331
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