scholarly journals Ferrite Measurement in Austenitic and Duplex Stainless Steel Castings - Literature Review

10.2172/14580 ◽  
1999 ◽  
Author(s):  
C.D. Lundin ◽  
G. Zhou ◽  
W. Ruprecht
Keyword(s):  
Stainless Steel ◽  
Literature Review ◽  
Duplex Stainless Steel ◽  
Steel Castings

Fatigue Crack Growth of Duplex Stainless Steel Castings at 4 K

1985 ◽  
Vol 107 (2) ◽  
pp. 161-165 ◽  
Author(s):  
P. T. Purtscher ◽  
Y. W. Cheng ◽  
P. N. Li
Keyword(s):  
Stainless Steel ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Duplex Stainless Steel ◽  
Crack Growth ◽  
Growth Rates ◽  
Constant Load ◽  
Steel Castings ◽  
Constant Load Amplitude ◽  
Crack Growth Rates

Constant-load-amplitude stage II fatigue crack growth rates at 4 K were measured for duplex stainless steel castings. The results show that at a ΔK of 60 MPa•m1/2, da/dN = 7.6 × 10−4 mm/cycle for an alloy with 1 percent ferrite. For an alloy with 8 percent ferrite, da/dN is 35 percent, and for an alloy with 29 percent ferrite, da/dN is 260 percent greater than for the 1 percent ferrite alloy. However, the exponent in the Paris equation does not change appreciably (less than 18 percent) as the ferrite content changes from 1 to 29 percent.

Characterization of functional gradient structures in duplex stainless steel castings

2009 ◽  
Vol 15 (4) ◽  
pp. 293 ◽  
Author(s):  
J Tiusanen ◽  
K Rissa ◽  
T Ritvonen ◽  
J Lagerbom ◽  
K Keskiaho ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Functional Gradient ◽  
Steel Castings

Identification by Electron Microdiffraction of Intermetallic Phases in a Duplex Stainless Steel

1990 ◽  
Vol 48 (2) ◽  
pp. 494-495
Author(s):  
A. Redjaïmia ◽  
J.P. Morniroli ◽  
G. Metauer ◽  
M. Gantois
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Convergent Beam Electron Diffraction ◽  
Intermetallic Phases ◽  
Small Particles ◽  
Parallel Beam ◽  
Diffraction Patterns ◽  
Average Size ◽  
Convergent Beam ◽  
Electron Microdiffraction

2D and especially 3D symmetry information required to determine the crystal structure of four intermetallic phases present as small particles (average size in the range 100-500nm) in a Fe.22Cr.5Ni.3Mo.0.03C duplex stainless steel is not present in most Convergent Beam Electron Diffraction (CBED) patterns. Nevertheless it is possible to deduce many crystal features and to identify unambiguously these four phases by means of microdiffraction patterns obtained with a nearly parallel beam focused on a very small area (50-100nm).From examinations of the whole pattern reduced (RS) and full (FS) symmetries the 7 crystal systems and the 11 Laue classes are distinguished without ambiguity (1). By considering the shifts and the periodicity differences between the ZOLZ and FOLZ reflection nets on specific Zone Axis Patterns (ZAP) which depend on the crystal system, the centering type of the cell and the glide planes are simultaneously identified (2). This identification is easily done by comparisons with the corresponding simulated diffraction patterns.

Sign in / Sign up

Export Citation Format

Share Document