scholarly journals Effect of Corner Strength Enhancement on Shear Behaviour of Stainless Steel Lipped Channel Sections

Author(s):  
D. M. M. P. Dissanayake ◽  
K. Poologanathan ◽  
S. Gunalan ◽  
K. D. Tsavdaridis ◽  
N. Degtyareva
Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1094
Author(s):  
M. A. Lakhdari ◽  
F. Krajcarz ◽  
J. D. Mithieux ◽  
H. P. Van Landeghem ◽  
M. Veron

The impact of microstructure evolution on mechanical properties in superduplex stainless steel UNS S32750 (EN 1.4410) was investigated. To this end, different thermomechanical treatments were carried out in order to obtain clearly distinct duplex microstructures. Optical microscopy and scanning electron microscopy, together with texture measurements, were used to characterize the morphology and the preferred orientations of ferrite and austenite in all microstructures. Additionally, the mechanical properties were assessed by tensile tests with digital image correlation. Phase morphology was not found to significantly affect the mechanical properties and neither were phase volume fractions within 13% of the 50/50 ratio. Austenite texture was the same combined Goss/Brass texture regardless of thermomechanical processing, while ferrite texture was mainly described by α-fiber orientations. Ferrite texture and average phase spacing were found to have a notable effect on mechanical properties. One of the original microstructures of superduplex stainless steel obtained here shows a strength improvement by the order of 120 MPa over the industrial material.


2019 ◽  
Vol 153 ◽  
pp. 588-602 ◽  
Author(s):  
H.X. Yuan ◽  
X.W. Chen ◽  
M. Theofanous ◽  
Y.W. Wu ◽  
T.Y. Cao ◽  
...  

2005 ◽  
Vol 61 (1) ◽  
pp. 37-52 ◽  
Author(s):  
M. Ashraf ◽  
L. Gardner ◽  
D.A. Nethercot

Structures ◽  
2021 ◽  
Vol 31 ◽  
pp. 127-144
Author(s):  
Muhammadh Fareedh Muhammadh Ishqy ◽  
Somadasa Wanniarachchi ◽  
Keerthan Poologanathan ◽  
Shanmuganathan Gunalan ◽  
Perampalam Gatheeshgar ◽  
...  

Author(s):  
Qunjie Lu ◽  
Gai Huang ◽  
Yingzhe Wu ◽  
Huiming Ding ◽  
Jinyang Zheng

Pressure Strengthening (PS) is a technology widely used to increase the allowable stress and thus reduce the weight of Austenitic Stainless Steel (ASS) cryogenic vessels. Pre-strain and low temperature are two important factors enhancing the strength. However, standards such as EN 13458-2, ASME VIII-I, AS 1210 and ISO 21009-1, state that the strengthening is based on work hardening of ASS, while the effect of low temperature was ignored or not mentioned. Therefore, in this work, the influence of low temperature on cryogenic mechanical properties of S30408 stainless steel and its welded joints were studied firstly, then a numerical analysis on the influence of pressure strengthening of a large transportable cryogenic storage tank was conducted. Finally, after the technical significance of PS was discussed, a new understanding was proposed. Conclusions come that: (a) At room temperature, the strength of ASS can be increased by pre-strain; while at −196 °C, the strengthening of low temperature plays a leading role (2/3 or more) for strength increment; (b) The purpose of PS technique is to stabilize the dimensions of the internal vessel. It is unnecessary to consider insufficient strengthening or over strengthening at different location because the strength enhancement is mainly due to low temperatures.


2020 ◽  
Vol 170 ◽  
pp. 106122
Author(s):  
Yuchen Song ◽  
Jia Wang ◽  
Brian Uy ◽  
Dongxu Li

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 4162-4175
Author(s):  
Amir M. Yousefi ◽  
Bijan Samali ◽  
Yang Yu

Author(s):  
D. M. M. P. Dissanayake ◽  
K. Poologanathan ◽  
S. Gunalan ◽  
K. D. Tsavdaridis ◽  
K. S. Wanniarachchi

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