scholarly journals Mechanical Properties of Metal Inert Gas Welding Conditions of Railway-Vehicle Aluminum Under Frame

2021 ◽  
Vol 20 (6) ◽  
pp. 17-25
Author(s):  
Sang-Ho Jung ◽  
◽  
Hae-Ji Kim
Keyword(s):  
Mechanical Properties ◽  
Inert Gas ◽  
Railway Vehicle ◽  
Metal Inert Gas Welding

111 A study of crystal structure and mechanical properties of SPCC steel jointed by metal inert gas welding

2013 ◽  
Vol 2013.51 (0) ◽  
pp. _111-1_-_111-2_
Author(s):  
Shuhei TAKEUCHI ◽  
Mitsuhiro OKAYASU ◽  
Tatsuaki SAKAMOTO ◽  
Hiroaki OHFUJI ◽  
Tetsuro SHIRAISHI
Keyword(s):  
Crystal Structure ◽  
Mechanical Properties ◽  
Inert Gas ◽  
Metal Inert Gas Welding

Effects of Welding Parameters on Microstructure and Mechanical Properties of the Joint of the Magnesium Alloy AZ31B

2011 ◽  
Vol 480-481 ◽  
pp. 53-58
Author(s):  
De Xin Sun ◽  
Shi Jun Luo ◽  
Hong Zhuang Zhang ◽  
Da Qian Sun
Keyword(s):  
Mechanical Properties ◽  
Heat Affected Zone ◽  
Welding Current ◽  
Inert Gas ◽  
Welding Parameters ◽  
Grain Coarsening ◽  
Microstructure Change ◽  
Magnesium Alloy Az31b ◽  
Metal Inert Gas Welding ◽  
Equiaxed Grains

Through the metal inert gas welding (MIG) experiment, the effects of the different welding parameters on the microstructure, the weld configuration and the mechanical properties of the joint of the magnesium (Mg) alloy AZ31B were analyzed. The results indicate that with the increase in the welding current, the microstructure change of the weld is characterized by the grain coarsening, and the microstructure change of the heat affected zone is characterized by the grain coarsening and the broadening of the heat affected zone. An exorbitant welding current is inimical to the weld configuration. With the increase in the welding speed, the welding linear energy decreases, inducing the formation of the finer equiaxed grains in the weld. Moreover, the grains in the heat affected zone are also with the trend of the refinement, and thus the mechanical properties of the joint increase. The optimal welding current and speed in our experiment are 160-170A and 400-450mm/min, respectively.

scholarly journals Effect of welding and heat treatment on the properties of UHSS used in automotive industry

2021 ◽  
Vol 250 ◽  
pp. 05015
Author(s):  
Gulshan Noorsumar ◽  
Dmitry Vysochinskiy ◽  
Even Englund ◽  
Kjell G. Robbersmyr ◽  
Svitlana Rogovchenko
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Automotive Industry ◽  
High Strength ◽  
Heat Treatments ◽  
Inert Gas ◽  
Element Analysis ◽  
Heat Treated ◽  
Ultra High Strength Steel ◽  
Metal Inert Gas Welding

This paper deals with the undesired effects of the heat treatments on the mechanical properties of (UHSS) Ultra High Strength Steel used nowadays in automotive industry to improve crashworthiness performance of vehicles. The UHSS specimens were extracted from certain parts of the car body and subjected to different heat treatments. Four types of specimens were tested: untreated, welded with metal inert gas welding, heat treated at 800 °C, and heat treated at 1250 °C. All heat-treated specimens showed dramatically reduced values of strength. The results suggest that it is important to follow the official repair manuals avoiding unnecessary welding and improper heat treatments of UHSS. The experiments provide the data necessary for constructing a constitutive model and performing a finite-element analysis of improperly repaired UHSS parts.

Mechanical properties of SPCC low carbon steel joints prepared by metal inert gas welding

2013 ◽  
Vol 560 ◽  
pp. 643-652 ◽  
Author(s):  
Mitsuhiro Okayasu ◽  
Yuki Ohkura ◽  
Tatsuaki Sakamoto ◽  
Shuhei Takeuchi ◽  
Hiroaki Ohfuji ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Inert Gas ◽  
Low Carbon ◽  
Metal Inert Gas Welding ◽  
Steel Joints
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