Particle bonding, annealing response, and mechanical properties of dynamically consolidated type 304 stainless steel powders

1989 ◽  
Vol 20 (11) ◽  
pp. 2449-2457 ◽  
Author(s):  
R. N. Wright ◽  
G. E. Korth ◽  
J. E. Flinn
1986 ◽  
Vol 35 (398) ◽  
pp. 1284-1290 ◽  
Author(s):  
Kazuo OGAWA ◽  
Masaaki ISHII ◽  
Hiroyasu YOSHIZAWA ◽  
Satoshi OOTE ◽  
Yuhsaku WADA

Author(s):  
J-S Park ◽  
S-J Na

A mechanical analysis of stud-to-plate laser brazing was performed using the finite element method, and the transient displacement and stress fields in brazing workpieces were calculated. The materials used were small-diameter studs of AISI type 304 stainless steel, thin plates of Al 5052 aluminium and 88Al–12Si braze alloy for the filler metal. The mechanical analysis took account of the thermal aspects of brazing and the transient temperature fields were calculated using a brazing heat transfer model. An incremental plasticity model was employed for thermal elastoplastic analysis, which considered the temperature-dependent mechanical properties and the isotropic hardening effect of the materials. The numerical result showed that high residual tensile stresses remained in the middle of the braze gap, approaching the yield point of type 304 stainless steel. The permanent deformation of workpieces after the brazing was completed was minimal and confined to the area adjacent to the joint. Stress peaks were found to exist along the joining interfaces, which were due to mismatches in thermal and mechanical properties among the materials involved.


1993 ◽  
Vol 64 (2) ◽  
pp. 132-135 ◽  
Author(s):  
Hirohiko Takuda ◽  
Shiomi Kikuchi ◽  
Natsuo Hatta ◽  
Jun-ichi Kokado

Author(s):  
Cynthia M. Wise

The interaction of dislocations with grain boundaries is considered a controlling process for many of the mechanical properties, including strength in a metal. The grain boundary acts as a barrier to impede the motion of dislocations, and strengthens the material because of the increased stress necessary to induce slip propagation.TEM samples were prepared from type 304 stainless steel which was solution treated, lightly deformed, electropolished using standard techniques, and examined in a JEOL 200CX TEM operating at 200KeV, using a double-tilt goniometer stage.


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