Influences of welding processes on microstructure and mechanical properties of modified 12 wt % Cr ferritic stainless steel

2012 ◽  
Vol 7 (4) ◽  
pp. 331 ◽  
Author(s):  
A.K. Lakshminarayanan ◽  
V. Balasubramanian
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Microstructure And Mechanical Properties ◽  
Welding Processes

Effect of Heat Treatment Processes on Microstructure and Mechanical Properties of Nb-Ti-Stabilized 430 Stainless Steel Plate

2014 ◽  
Vol 887-888 ◽  
pp. 240-247
Author(s):  
Xun Zeng Huang ◽  
Si Yue Chen ◽  
Xin Zhang ◽  
Yi Tao Yang
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Mechanical Performance ◽  
Strain Ratio ◽  
Annealed Sample ◽  
Annealing Process ◽  
Plastic Strain Ratio ◽  
Microstructure And Mechanical Properties ◽  
430 Stainless Steel

In this research, influence of annealing process on microstructure and mechanical performance of Nb-Ti-stabilized 430 ferritic stainless steel were investigated. In order to obtain the optimal annealing process, metallographic observation, SEM detection and tensile test were carried out. It is found that the microscopic structure is composed of fine and uniform isometric recrystallization grain after annealing. Optimum microstructure and mechanical properties can be achieved while annealed at 950 °Cfor 90 seconds. The annealed sample can obtain the optimum microstructure and mechanical properties under such annealing process. The yield platform is eliminated and the average plastic strain ratio is further improved to 1.269, which reflected a well deep drawability of the Nb-Ti-stabilized 430 ferritic stainless steel compared to SUS 430 stainless steel.

Microstructural evolution and properties of tungsten inert gas and fiber laser welded SUS445 ferritic stainless steel

2021 ◽  
Vol 112 (9) ◽  
pp. 687-694
Author(s):  
Ching-Wen Lu ◽  
Huei-Sen Wang ◽  
Chih-Chun Hsieh ◽  
Jie-Jyun Wu
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Fiber Laser ◽  
Ferritic Stainless Steel ◽  
Heat Affected Zone ◽  
Volume Fraction ◽  
Inert Gas ◽  
Laves Phases ◽  
Welding Processes

Abstract To determine the weldability of SUS445 ferritic stainless steel, two welding approaches, tungsten inert gas and fiber laser welding processes, were used and compared. After the welding processes, the microstructure, mechanical properties, and corrosion resistance of the welds were investigated. In the weld fusion zones of these two welding approaches, different morphologies of the grains were obtained. No obvious precipitation formed in these zones. In the heat affected zone of the tungsten inert gas welds, more volume fraction and larger grain sizes of the Laves phase and larger matrix grains were observed, which significantly affected its corrosion resistance and mechanical properties. However, in the heat affected zone of the fiber laser welds, only small amounts Laves phases and a relatively narrow matrix grain growth area were observed, which offers better corrosion resistance and mechanical properties.

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