Experimental and numerical study of the ironing of stainless steel cups

1999 ◽  
Vol 91 (1-3) ◽  
pp. 95-104 ◽  
Author(s):  
Daniel Delarbre ◽  
Pierre Montmitonnet
Keyword(s):  
Stainless Steel ◽  
Numerical Study

Computational Simulations on Melting Process of Fine Metal Powders With Laser Irradiation Welding

2009 ◽  
Author(s):  
Kazuyuki Takase ◽  
Toshiharu Muramatsu ◽  
Takahisa Shobu ◽  
Kazuyuki Tsukimori
Keyword(s):  
Stainless Steel ◽  
Metal Powder ◽  
Steel Plate ◽  
Numerical Study ◽  
Melting Process ◽  
Metal Powders ◽  
Stainless Steel Plate ◽  
Term Operation ◽  
Breeder Reactors

At the commercial use stage in sodium-cooled fast breeder reactors, securing maintenance and repair better than an equal to that of present water-cooled reactors is needed. Especially a repair technology that secures the plant integrity for long-term operation period becomes indispensable in the heat exchanger tubes of the steam generator that form the boundary of sodium and water coolants. Then the present study focused on the standardization of welding technology with a laser. An experimental study regarding the welding of a stainless steel plate with the laser using fine metal powders is being performed. Moreover, a numerical study is performed to simulate the welding of the fine metal powder on the stainless steel plate. The fine metal powder is made of iron, and is heated by the laser beam, and then melts exceeding the melting temperature. This paper reports the computational results of the welding phenomenon of some metal powders which changes from solid to liquid and liquid to solid. The results were compared with the experimental results qualitatively.

Numerical Study of Detonation Propagation in an Insensitive High Explosive Arc with Confinement Materials

2020 ◽  
pp. 2050117
Author(s):  
Yupei Qin ◽  
Kuibang Huang ◽  
Huan Zheng ◽  
Yousheng Zhang ◽  
Xin Yu
Keyword(s):  
Stainless Steel ◽  
Steady State ◽  
Detonation Wave ◽  
High Explosive ◽  
Numerical Study ◽  
Detonation Front ◽  
Outer Boundary ◽  
Outer Part ◽  
Transition Phase ◽  
Detonation Propagation

Detonation propagation in a confined circular arc configuration of an insensitive high explosive PBX9502 is investigated via numerical simulation in this paper. We introduce a steady detonation wave entering the explosive arc with confinements of stainless steel, and then it undergoes a transition phase and reaches a new steady state with a constant angular speed eventually. The influences of the inner and the outer confinements on the propagating detonation wave as well as the characteristics of the detonation driving zone (DDZ) in the steady state are discussed, respectively. Ignition and Growth (I&G) reaction rate and Jones–Wilkins–Lee (JWL) equations of state for the reactants and the products of PBX9502 are employed in the numerical simulations on the basis of a two-dimensional Eulerian code. The equation of state for stainless steel is in the Grüneisen form with a linear shock speed–particle speed Hugoniot relationship. Our results show that the inner confinement dominates the evolution of the detonation wave and the outer confinement only takes effect in a local region near the outer boundary within a limited initial stage during the transition phase. As for the steady state, the existence of the inner confinement makes the DDZ possess a certain width on the inner boundary. While as to the outer part of the detonation wave, the width of the DDZ decreases until the sonic locus intersects with the detonation front shock, which results in the detachment of the DDZ from the outer boundary and makes the detonation propagation fully independent of the outer confinement.

scholarly journals Mechanical anisotropy of additively manufactured stainless steel 316L: An experimental and numerical study

2021 ◽  
Vol 799 ◽  
pp. 140154
Author(s):  
A. Charmi ◽  
R. Falkenberg ◽  
L. Ávila ◽  
G. Mohr ◽  
K. Sommer ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Numerical Study ◽  
Mechanical Anisotropy ◽  
Stainless Steel 316L

Experimental and numerical study of cold-drawn duplex stainless steel square tube columns

2019 ◽  
Vol 156 ◽  
pp. 155-166 ◽  
Author(s):  
Ganping Shu ◽  
Xin Jin ◽  
Yongquan Zhang ◽  
Yueyan Gu ◽  
Baofeng Zheng ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Numerical Study

Laser brazing of 321 and 410 stainless steels with AMS 4777 filler metal: Experimental and numerical study

2018 ◽  
Vol 233 (4) ◽  
pp. 1062-1074 ◽  
Author(s):  
Ali Khorram
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Stainless Steels ◽  
Filler Metal ◽  
Volume Fraction ◽  
Numerical Study ◽  
Liquid Fraction ◽  
Laser Source ◽  
Conservation Of Energy ◽  
Joint Clearances

321 and 410 stainless steels were brazed using 400 W pulsed Nd:YAG laser source with AMS 4777 filler metal for various joint clearances. Optical microscopy and scanning electron microscopy were used to study the microstructure of all specimens. Mechanical properties (microhardness and tensile test) of all specimens were evaluated. The wetting, spreading, and flowing of AMS 4777 filler metal on substrates during this process were modeled using finite volume model. The equations of conservation of mass, conservation of momentum, and conservation of energy were solved in FLUENT software for calculating volume fraction and liquid fraction. AMS 4777 filler metal shows excellent wettability on the 321 and 410 stainless steels. The filler metal and specimens mainly consist of nickel solid solution (Ni), chromium boride (CrB), and nickel boride (Ni3B). The average microhardness for specimens in seam is 492 HV. The tensile strength of specimens changes from 200 up to 480 MPa due to various joint clearances. The higher tensile strength of 321 stainless steel specimens in comparison with 410 stainless steel specimens is due to less wetting angle and more spreading width of filler metal. The simulated results show that this model can be used for predicting geometry of joints at various joint clearances.

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