Influence of Chloride-Containing Media on the Pitting Resistance of AISI 321 Steel

2022 ◽  
Author(s):  
O. E. Narivskyi ◽  
S. B. Belikov ◽  
S. A. Subbotin ◽  
T. V. Pulina
Keyword(s):  
Aisi 321

Исследование химического состава и микроструктуры сварного соединения AISI 321/Cu/Ta/Ti

2020 ◽  
Vol 121 (11) ◽  
pp. 1213-1219
Author(s):  
Н. Б. Пугачева ◽  
А. М. Оришич ◽  
А. Н. Черепанов ◽  
Е. И. Сенаева ◽  
Е. Б. Трушина
Keyword(s):  
Aisi 321

scholarly journals Hot workability of AISI 321 and AISI 304 austenitic stainless steels

2014 ◽  
Vol 595 ◽  
pp. 103-112 ◽  
Author(s):  
Richard K.C. Nkhoma ◽  
Charles W. Siyasiya ◽  
Waldo E. Stumpf
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Hot Workability ◽  
Aisi 304 ◽  
Aisi 321

Evaluation of High Cycle Fatigue Properties of Double Side Welded AISI 321 Plates Using GTAW Process for Pressure Vessels

2021 ◽  
Author(s):  
Mohan Kumar S ◽  
A. Rajesh Kannan ◽  
Pramod R. ◽  
Pravin Kumar N ◽  
Nallathambi Siva Shanmugam ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Fatigue Behavior ◽  
Fatigue Behaviour ◽  
Pressure Vessels ◽  
Fatigue Properties ◽  
Dendritic Microstructure ◽  
Gas Tungsten Arc ◽  
Gtaw Process ◽  
Fatigue Rupture ◽  
Aisi 321

Abstract Titanium stabilized AISI 321 material (UNS S32100) is generally preferred in the pressure vessel industry as they are not sensitive to intergranular corrosion. In critical applications, the fatigue behaviour of weld seams are amongst the most stringent requirements. The microstructural characteristics and fatigue performance of double side welded AISI 321 plate having 6 mm thickness were evaluated in this work. AISI 321 was welded with Double side-gas tungsten arc welding (DS-GTAW) process. The fatigue behavior was examined under a loading ratio of 0.1 for two different specimens: Base metal (BM) and Weld metal (WM). Monotonic tensile results show the improved tensile properties of WM compared to BM samples. The fatigue strength of WM (332.6 MPa) was 25% higher than that of BM (265.7 MPa) specimen and is attributed to the increase in ferrite volume along with dendritic microstructure. The change in the fraction of low angle grain boundaries (LABs) and high angle grain boundaries (HABs) improved the tensile and fatigue properties. The stress amplitudes influenced the degree of striations in the BM and WM. Final fracture surfaces were characterized with dimples and micro-voids, revealing the ductile mode of fatigue fracture. The fatigue rupture surfaces of BM and WM samples at different stress regimes are discussed.

Plasma-Assisted Nitriding in Low-Frequency Inductively Coupled Plasma Enhanced with Ferromagnetic Cores

2018 ◽  
Vol 37 (6) ◽  
pp. 545-550
Author(s):  
Mikhail Isupov ◽  
Vadim Pinaev ◽  
Daria Mul ◽  
Natalia Belousova
Keyword(s):  
Inductively Coupled Plasma ◽  
High Speed ◽  
Low Frequency ◽  
Sample Surface ◽  
Ion Energy ◽  
Inductively Coupled ◽  
Steel Aisi ◽  
Current Densities ◽  
Aisi 321 ◽  
Stainless Steel Aisi

AbstractAn experimental investigation of plasma-assisted nitriding of austenitic stainless steel AISI 321 in a low-pressure (7 Pa), low-frequency (50–100 kHz) nitrogen inductively coupled plasma enhanced with ferromagnetic cores has been performed at the temperatures of 470–625 °C, sample biases of ‒500–‒750 V, current densities on the sample surface of 1.2–3.3 mA/cm2 and nitriding times of 20 and 60 min. It is found that even the short (20 min) ion-plasma treatment results in the formation of nitrided layers with the thickness of up to 40 μm and microhardness of up to 9 GPa.The high speed of nitriding can be explained as a result of the joint action of high ion flux density and high ion energy on the sample surface.

Studying the diffusion interaction between a copper plate and steel AISI 321 under laser treatment

2018 ◽  
Author(s):  
E. I. Senaeva ◽  
A. V. Makarov ◽  
N. B. Pugacheva ◽  
E. B. Trushina
Keyword(s):  
Laser Treatment ◽  
Copper Plate ◽  
Diffusion Interaction ◽  
Steel Aisi ◽  
Aisi 321
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