Origin of the lathy ferrite in AISI 304 stainless steel during directional solidification

2013 ◽  
Vol 580 ◽  
pp. 191-194 ◽  
Author(s):  
J.W. Fu ◽  
Y.S. Yang
Keyword(s):  
Stainless Steel ◽  
Directional Solidification ◽  
304 Stainless Steel ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304

Formation of two-phase coupled microstructure in AISI 304 stainless steel during directional solidification

2009 ◽  
Vol 24 (7) ◽  
pp. 2385-2390 ◽  
Author(s):  
J.W. Fu ◽  
Y.S. Yang ◽  
J.J. Guo ◽  
J.C. Ma ◽  
W.H. Tong
Keyword(s):  
Stainless Steel ◽  
Solid State ◽  
Directional Solidification ◽  
304 Stainless Steel ◽  
State Transformation ◽  
Aisi 304 Stainless Steel ◽  
Solid State Transformation ◽  
Two Phase ◽  
Aisi 304 ◽  
Quenching Method

Formation and evolution details of a two-phase coupled microstructure in AISI 304 stainless steel are studied by quenching method during directional solidification. Results show that the coupled growth microstructure, which is composed of thin lath-like ferrite (δ) and austenite (γ), crystallizes first in the form of colony from the melt. As solidification develops, the retained liquid transforms into austenite gradually. On cooling, solid-state transformation from ferrite to austenite results in the disappearance of part thinner ferrites and the final two-phase coupled microstructure is formed after the solid-state transformation. The formation mechanism of the two-phase coupled microstructure is analyzed based on the nucleation and constitutional undercooling criterion (NCU) before steady-state growth of each phase is reached.

Comparison of Recovery and Recrystallization in Stainless Steel Following Plane-Wave Shock Loading and Explosive Forming

1970 ◽  
Vol 28 ◽  
pp. 428-429 ◽  
Author(s):  
J. A. Korbonski ◽  
L. E. Murr
Keyword(s):  
Stainless Steel ◽  
Shock Loading ◽  
Pressure Pulse ◽  
Shock Pressure ◽  
304 Stainless Steel ◽  
Strain Rates ◽  
Two Dimensional ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Explosive Forming

Comparison of recovery rates in materials deformed by a unidimensional and two dimensional strains at strain rates in excess of 104 sec.−1 was performed on AISI 304 Stainless Steel. A number of unidirectionally strained foil samples were deformed by shock waves at graduated pressure levels as described by Murr and Grace. The two dimensionally strained foil samples were obtained from radially expanded cylinders by a constant shock pressure pulse and graduated strain as described by Foitz, et al.

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