scholarly journals Bending Failure Mechanism Study of Si-Cr-TiHigh Temperature Oxidation Resistance Coating via Acoustic Emission Technique

2021 ◽  
pp. 32
Author(s):  
ZHANG Yachen ◽  
MENG Jia ◽  
CAI Kun ◽  
SHENG Xiaochen ◽  
LE Jun ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Failure Mechanism ◽  
Oxidation Resistance ◽  
Mechanism Study ◽  
Acoustic Emission Technique ◽  
Temperature Oxidation ◽  
Bending Failure

An Evaluation on Corrosion Effect of Carbon Steel Using the NDT

2007 ◽  
Vol 353-358 ◽  
pp. 2411-2414
Author(s):  
Sang Ll Lee ◽  
Jin Kyung Lee ◽  
Joon Hyun Lee
Keyword(s):  
Acoustic Emission ◽  
Carbon Steel ◽  
Power Plant ◽  
Failure Mechanism ◽  
Attenuation Factor ◽  
Ultrasonic Test ◽  
Carbon Steels ◽  
Secondary Circuit ◽  
Acoustic Emission Technique ◽  
Corrosion Effect

The nuclear power plant has lots of pipes that the fluid of high temperature and high pressure flows. Among the pipe materials used at secondary circuit of the power plant the carbon steels are sensitive to corrosion due to their material properties. In this study, both ultrasonic test and acoustic emission test were used to study the corrosion effect for the carbon steel pipe nondestructively. The carbon steel specimens were in the pipe under 473K temperatures and 10MPa pressure conditions for corrosion processing. According to the degree of corrosion the strength of the specimen was evaluated, and the thickness of the corrosion specimens was also measured by using the ultrasonic wave. The experimental results showed that the attenuation factor was also increased as a depth of corrosion increased. The measured depth of the real corrosion by ultrasonic test shows the good agreement with that by an optical microscope. In order to understand the corrosion effect for the failure mechanism of carbon steel, a failure test on the specimen with various corrosion conditions was performed. An acoustic emission technique was also used to evaluate the degree of damage of corrosion specimen in real time. Acoustic emission technique is proved a useful method for on-line monitoring the microscopic failure mechanism and the damage location for the structures.

Optimizing the Acoustic-Emission Technique for Examining the Strength of Welded Joints

Vestnik MEI ◽  
2017 ◽  
pp. 96-101
Author(s):  
Viktor V. Nosov ◽  
◽  
Alsu R. Yamilova ◽  
Nikolay A. Zelenskiy ◽  
Ilya V. Matviyan ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Welded Joints ◽  
Acoustic Emission Technique

AK STEEL 441

Alloy Digest ◽  
2006 ◽  
Vol 55 (6) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Ferritic Stainless Steel ◽  
High Temperature Oxidation ◽  
High Temperature Strength ◽  
Temperature Oxidation ◽  
Temperature Performance

Abstract AK Steel 441 has good high-temperature strength, an equiaxed microstructure, and good high-temperature oxidation resistance. The alloy is a niobium-bearing ferritic stainless steel. This datasheet provides information on composition, hardness, and tensile properties as well as deformation. It also includes information on high temperature performance and corrosion resistance as well as forming and joining. Filing Code: SS-965. Producer or source: AK Steel.

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