Life assessment in constant and variable amplitude high-temperature fatigue of ductile cast iron and metastable austenitic steel based on in situ measurement of physical properties

2018 ◽  
Vol 49 (3) ◽  
pp. 332-344
Author(s):  
M. Klein ◽  
B. Jost ◽  
M. Smaga ◽  
A. Sorich ◽  
D. Eifler ◽  
...  
Keyword(s):  
Cast Iron ◽  
High Temperature ◽  
Physical Properties ◽  
Austenitic Steel ◽  
Ductile Cast Iron ◽  
Life Assessment ◽  
Variable Amplitude ◽  
High Temperature Fatigue ◽  
Metastable Austenitic Steel

scholarly journals High Temperature Fatigue Properties of a Si-Mo Ductile Cast Iron

2014 ◽  
Vol 3 ◽  
pp. 2154-2159 ◽  
Author(s):  
P. Matteis ◽  
G. Scavino ◽  
A. Castello ◽  
D. Firrao
Keyword(s):  
Cast Iron ◽  
High Temperature ◽  
Ductile Cast Iron ◽  
Fatigue Properties ◽  
High Temperature Fatigue

scholarly journals Structural Transformations and Mechanical Properties of Metastable Austenitic Steel under High Temperature Thermomechanical Treatment

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 645
Author(s):  
Igor Litovchenko ◽  
Sergey Akkuzin ◽  
Nadezhda Polekhina ◽  
Kseniya Almaeva ◽  
Evgeny Moskvichev
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
High Temperature ◽  
Austenitic Steel ◽  
Structural Transformations ◽  
Initial State ◽  
Twin Boundaries ◽  
Metastable Austenitic Steel ◽  
Average Grain Size ◽  
Heating Up

The effect of high-temperature thermomechanical treatment on the structural transformations and mechanical properties of metastable austenitic steel of the AISI 321 type is investigated. The features of the grain and defect microstructure of steel were studied by scanning electron microscopy with electron back-scatter diffraction (SEM EBSD) and transmission electron microscopy (TEM). It is shown that in the initial state after solution treatment the average grain size is 18 μm. A high (≈50%) fraction of twin boundaries (annealing twins) was found. In the course of hot (with heating up to 1100 °C) plastic deformation by rolling to moderate strain (e = 1.6, where e is true strain) the grain structure undergoes fragmentation, which gives rise to grain refining (the average grain size is 8 μm). Partial recovery and recrystallization also occur. The fraction of low-angle misorientation boundaries increases up to ≈46%, and that of twin boundaries decreases to ≈25%, compared to the initial state. The yield strength after this treatment reaches up to 477 MPa with elongation-to-failure of 26%. The combination of plastic deformation with heating up to 1100 °C (e = 0.8) and subsequent deformation with heating up to 600 °C (e = 0.7) reduces the average grain size to 1.4 μm and forms submicrocrystalline fragments. The fraction of low-angle misorientation boundaries is ≈60%, and that of twin boundaries is ≈3%. The structural states formed after this treatment provide an increase in the strength properties of steel (yield strength reaches up to 677 MPa) with ductility values of 12%. The mechanisms of plastic deformation and strengthening of metastable austenitic steel under the above high-temperature thermomechanical treatments are discussed.

STAINLESS STEEL TYPE 303Pb

Alloy Digest ◽  
1960 ◽  
Vol 9 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Austenitic Steel ◽  
Stainless Steels ◽  
Heat Treating ◽  
Steel Type ◽  
Temperature Performance

Abstract Stainless Steel Type 303Pb is a lead bearing, free-cutting, austenitic steel. It contains a nominal 18% Chromium, 8% Nickel and 0.3% free machining addition which is divided between lead and sulfur. This steel was designed for superior machinability to provide its users with increased production. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-110. Producer or source: Joslyn Stainless Steels.

CROLOY 299

Alloy Digest ◽  
1974 ◽  
Vol 23 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Austenitic Steel ◽  
Tensile Properties ◽  
Heat Treating ◽  
Temperature Performance ◽  
Cold Worked

Abstract CROLOY 299 is a chromium-manganese austenitic steel which can be cold worked to high levels of strength and hardness without becoming magnetic. It exhibits permeability of less than 1.01 Mu as measured with a Severn tester. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-290. Producer or source: Babcock & Wilcox Company.

MEEHANITE GD250

Alloy Digest ◽  
2021 ◽  
Vol 70 (5) ◽  
Keyword(s):  
Tensile Strength ◽  
Cast Iron ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Gray Cast Iron ◽  
Heat Treating ◽  
Test Pieces ◽  
Temperature Performance ◽  
Iron Grade

Abstract Meehanite GD250 is an intermediate-tensile-strength, pearlitic gray cast iron grade that has a minimum tensile strength of 250 MPa (36 ksi), when determined on test pieces machined from separately cast, 30 mm (1.2 in.) diameter test bars. Owing to its good machinability it is suitable for mass produced parts for automobiles as well as for small hydraulic bodies that must be pressure tight. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on low and high temperature performance as well as casting, heat treating, machining, and joining. Filing Code: CI-81. Producer or source: Meehanite Metal Corporation.

In situ synchrotron investigation of degenerate graphite nodule evolution in ductile cast iron

2021 ◽  
pp. 117367
Author(s):  
T. Wigger ◽  
T. Andriollo ◽  
C. Xu ◽  
S.J. Clark ◽  
Z. Gong ◽  
...  
Keyword(s):  
Cast Iron ◽  
Ductile Cast Iron ◽  
Graphite Nodule
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