Characterization of Sigma Phase in Duplex Stainless Steels Using Non-destructive Ultrasonic Techniques
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Abstract
Duplex stainless steels have wide applications in industry due to their high mechanical strength, excellent toughness, and high corrosion resistance regarding to other types of steels. However, these steels are susceptible to form brittle phases during heat treatment associated to manufacture or welding processes, in particular the negative effect of sigma-phase into ferrite-austenitic microstructure has to be pointed out. In this work, a study is carried out about the use of ultrasonic nondestructive technique to establish a relationship between sigma phase signal percentages in 2507 duplex stainless steel and more relevant features of the collected ultrasonic signal in an equation. Thus, a novel method is obtained to perform the inspection of these materials in-situ in order to avoid the loss of mechanical resistance and to increase the susceptibility to localized corrosion in service.
Abstract
Duplexstähle haben ein breites industrielles Anwendungsfeld aufgrund ihrer hohen mechanischen Festigkeit, exzellenten Zähigkeit und ihres hohen Korrosionswiderstandes im Vergleich zu anderen Stahlsorten. Dennoch sind diese Stähle anfällig für die Bildung spröder Phasen während der Wärmebehandlung bei Verarbeitungs- oder Schweißprozessen, wobei besonders der negative Effekt der Sigmaphase in der ferritisch-austenitischen Mikrostruktur betonen ist. Die diesem Beitrag zugrunde liegende Studie wurde durchgeführt, um die Verwendung von zerstörungsfreien Ultraschalltechniken prozentuale Abhängigkeiten zu untersuchen, ob damit in 2507 Duplexstahl von relevanten Kenndaten des Ultraschallsignales in einer Gleichung dargestellt werden können. Damit steht ein neuartiges Verfahren zur Verfügung, um diese Werkstoffe in-situ zu inspizieren und somit einen Verlust ihrer mechanischen Eigenschaften sowie eines Anstieges der Anfälligkeit für Lokalkorrosion im Betrieb zu vermeiden.
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© 2013, Carl Hanser Verlag, München
Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- The Effect of Helical Pin Profiles on the Friction Stir Welding Performance of Aluminium Alloy AA6082
- Optimization of Tensile Strength of Friction Welded AISI 1040 and AISI 304L Steels According to Statistics Analysis (ANOVA)
- Weldability of AISI 304 to Copper by Friction Welding
- Characterization of Sigma Phase in Duplex Stainless Steels Using Non-destructive Ultrasonic Techniques
- Effect of Plasma Nitriding Parameters on the Wear Behaviour of AISI D6 Tool Steel
- Investigating the Wear Behaviour of FeCrC/B4C Powder Alloys Coating Produced by Plasma Transferred Arc Weld Surfacing Using the Taguchi Method
- The Effect of Aging and Sliding Speed on Wear Behaviour of Cu-Cr-Zr Alloy
- Mathematical Modeling of Diameter and Circularity Deviation in Wire Electrical Discharge Machining of a Hot Work Tool Steel
- An Automatic Detecting Apparatus for Antarctic Sea Ice Cracks
- Manual and Automatic Determination of the Plastic Strain Ratio
- Acoustic Emission Evaluation of Fatigue Life Prediction for a Carbon Steel Specimen using a Statistical-Based Approach
- Kalender/Calendar
- Kalender
- Vorschau/Preview
- Vorschau
Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- The Effect of Helical Pin Profiles on the Friction Stir Welding Performance of Aluminium Alloy AA6082
- Optimization of Tensile Strength of Friction Welded AISI 1040 and AISI 304L Steels According to Statistics Analysis (ANOVA)
- Weldability of AISI 304 to Copper by Friction Welding
- Characterization of Sigma Phase in Duplex Stainless Steels Using Non-destructive Ultrasonic Techniques
- Effect of Plasma Nitriding Parameters on the Wear Behaviour of AISI D6 Tool Steel
- Investigating the Wear Behaviour of FeCrC/B4C Powder Alloys Coating Produced by Plasma Transferred Arc Weld Surfacing Using the Taguchi Method
- The Effect of Aging and Sliding Speed on Wear Behaviour of Cu-Cr-Zr Alloy
- Mathematical Modeling of Diameter and Circularity Deviation in Wire Electrical Discharge Machining of a Hot Work Tool Steel
- An Automatic Detecting Apparatus for Antarctic Sea Ice Cracks
- Manual and Automatic Determination of the Plastic Strain Ratio
- Acoustic Emission Evaluation of Fatigue Life Prediction for a Carbon Steel Specimen using a Statistical-Based Approach
- Kalender/Calendar
- Kalender
- Vorschau/Preview
- Vorschau