scholarly journals Enhancing fracture toughness of nanotwinned austenitic steel by thermal annealing

2016 ◽  
Vol 119 ◽  
pp. 55-59 ◽  
Author(s):  
L. Xiong ◽  
Z.S. You ◽  
L. Lu
Author(s):  
Y. W. Cheng ◽  
H. I. McHenry ◽  
P. N. Li ◽  
T. Inoue ◽  
T. Ogawa

2014 ◽  
Vol 449 (1-3) ◽  
pp. 263-272 ◽  
Author(s):  
Thak Sang Byun ◽  
Jong-Hyuk Baek ◽  
Osman Anderoglu ◽  
Stuart A. Maloy ◽  
Mychailo B. Toloczko

Alloy Digest ◽  
1960 ◽  
Vol 9 (11) ◽  

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.


Alloy Digest ◽  
1974 ◽  
Vol 23 (1) ◽  

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.


Alloy Digest ◽  
1960 ◽  
Vol 9 (6) ◽  

Abstract JESSOP No. 200 is a non-magnetic, austenitic steel developed especially for the electrical industry. It has low magnetic permeability and high electrical resistance. Jessop No. 200 is ideal for a great number of applications requiring low permeability material where corrosion resistance is not a factor and where cost is important. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-99. Producer or source: Jessop Steel Company.


1979 ◽  
Vol 21 (9) ◽  
pp. 678-681
Author(s):  
B. A. Potekhin ◽  
V. P. Korobeinikov

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2047
Author(s):  
Gyubaek An ◽  
Jeongung Park ◽  
Hongkyu Park ◽  
Ilwook Han

High-manganese austenitic steel was developed to improve the fracture toughness and safety of steel under cryogenic temperatures, and its austenite structure was formed by increasing the Mn content. The developed high-manganese austenitic steel was alloyed with austenite-stabilizing elements (e.g., C, Mn, and Ni) to increase cryogenic toughness. It was demonstrated that 30 mm thickness high-manganese austenitic steel, as well as joints welded with this steel, had a sufficiently higher fracture toughness than the required toughness values evaluated under the postulated stress conditions. High-manganese austenitic steel can be applied to large offshore and onshore LNG storage and fuel tanks located in areas experiencing cryogenic conditions. Generally, fracture toughness decreases at lower temperatures; therefore, cryogenic steel requires high fracture toughness to prevent unstable fractures. Brittle fracture initiation and arrest tests were performed using 30 mm thickness high-manganese austenitic steel and SAW joints. The ductile fracture resistance of the weld joints (weld metal, fusion line, fusion line + 2 mm) was investigated using the R-curve because a crack in the weld joint tends to deviate into the weld metal in the case of undermatched joints. The developed high-manganese austenitic steel showed little possibility of brittle fracture and a remarkably unstable ductile fracture toughness.


2022 ◽  
pp. 117642
Author(s):  
Gang Niu ◽  
Hatem S. Zurob ◽  
R.D.K. Misra ◽  
Qibo Tang ◽  
Zhihui Zhang ◽  
...  

2009 ◽  
Vol 1222 ◽  
Author(s):  
I-Kuan Lin ◽  
Ping-Hsin Wu ◽  
Kuang-Shun Ou ◽  
Kuo-Shen Chen ◽  
Xin Zhang

AbstractThis paper presents the mechanical characterization of the elastic modulus, hardness and fracture toughness of silicon oxynitride films (SiON) with different oxygen and nitrogen content, subjected to thermal annealing processed at 400 °C and 800 °C. The Fourier-transform infrared (FT-IR) spectroscopy was employed to characterize the SiON films with respect to the absorbance peak in the infrared spectrum. The nanoindentation testing showed that both the elastic modulus and hardness slightly increased after thermal annealing. Finally, the fracture toughness of the SiON films were estimated using Vickers micro-indentation tests and the result revealed that the fracture toughness decreased with increasing rapid thermal annealing (RTA) temperature and nitrogen content. We believe these results benefit microelectromechanical systems (MEMS) in regards to maintaining the structural integrity and improving reliability performance.


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