Study on structure and mechanical properties of 20X13 steel welding joints

2020 ◽  
Vol 843 ◽  
pp. 012012
Author(s):  
Y B Argirov ◽  
T M Mechkarova ◽  
A M Stoyanova ◽  
N M Atanasov ◽  
M I Konsulova-Bakalova
Keyword(s):  
Mechanical Properties ◽  
Welding Joints ◽  
20X13 Steel

The Effect of Welding Materials on 1Cr18Ni9Ti and 2Cr13 Steel Welding Joints Microstructure and Mechanical Properties

2012 ◽  
Vol 217-219 ◽  
pp. 1729-1733
Author(s):  
Yong Tao Zhao ◽  
Zong Chang Liu ◽  
Jun Wei Zhou
Keyword(s):  
Mechanical Properties ◽  
Lath Martensite ◽  
Residual Austenite ◽  
Welding Wire ◽  
Columnar Crystal ◽  
Joint Zone ◽  
Welding Joint ◽  
Welding Joints ◽  
Better Than ◽  
Welding Materials

By method of TIG, under certain welding craft conditions, two kinds of welding wire were added,1Cr18Ni9Ti and 2Cr13 steel were welded. By (ZEISS) OM, SEM, the microstructure of two kinds of 2Cr13 and 1Cr18Ni9Ti welding joints were observed and analyzed, by electronic universal tensile machine, mechanical properties of welding joints were measured. The results show that 2Cr13 and 1Cr18Ni9Ti welded joints is typical columnar crystal, the microstructure is lath martensite + residual austenite + carbide; the micro-hardness of two kinds of welding joint changes fluctuantly, it increases firstly and reduces secondly, the value is up to max in welded joint zone. The welding joints filled in two kinds of materials, tensile samples rupture forms are toughness rupture; plasticity and strength of welding joint filled in ER308 welding material is better than that of welding joint filled in H1Cr21Ni10Mn7Mo welding wire. On the contrary, its hardness is lower than that filled in H1Cr21Ni10Mn7Mo welding wire.

Study on the Microstructure and Mechanical Properties of Welding Joints of 7A05 Aluminum Alloy by FSW

2014 ◽  
Vol 496-500 ◽  
pp. 110-113
Author(s):  
Dong Gao Chen ◽  
Jin He Liu ◽  
Zhi Hua Ma ◽  
Wu Lin Yang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Welding Speed ◽  
Welded Joint ◽  
Optical Microscope ◽  
Nugget Zone ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties ◽  
Welding Joints

The7A05 aluminum alloy of the 10mm thickness was welded by the friction stir welding. The microstructure and mechanical Properties of the welded joint was researched by the optical microscope, etc. The results showed: the microstructure of the weld nugget zone and the thermal mechanically affected zone were refined as the welding speed increasing when the rotate speed is constant. As the welding speed increasing the strength of extension of the welded joint is increasing at first and then stable basically. but the yield strength had no obvious change.

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