Plastic strain characterization in austenitic stainless steels and nickel alloys by electron backscatter diffraction

2011 ◽  
Vol 416 (1-2) ◽  
pp. 75-79 ◽  
Author(s):  
A. Sáez-Maderuelo ◽  
L. Castro ◽  
G. de Diego
Keyword(s):  
Plastic Strain ◽  
Stainless Steels ◽  
Nickel Alloys ◽  
Electron Backscatter Diffraction ◽  
Austenitic Stainless Steels ◽  
Strain Characterization ◽  
Electron Backscatter ◽  
Backscatter Diffraction

Examination of the Orientation Relationships between the Main Phases of Duplex Stainless Steel by EBSD

2007 ◽  
Vol 537-538 ◽  
pp. 297-302
Author(s):  
Tibor Berecz ◽  
Péter János Szabó
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Stainless Steels ◽  
Electron Backscatter Diffraction ◽  
Duplex Stainless Steels ◽  
Alloying Elements ◽  
Orientation Relationships ◽  
Σ Phase ◽  
Electron Backscatter ◽  
Backscatter Diffraction

Duplex stainless steels are a famous group of the stainless steels. Duplex stainless steels consist of mainly austenitic and ferritic phases, which is resulted by high content of different alloying elements and low content of carbon. These alloying elements can effect a number of precipitations at high temperatures. The most important phase of these precipitation is the σ-phase, what cause rigidity and reduced resistance aganist the corrosion. Several orientation relationships have been determined between the austenitic, ferritic and σ-phase in duplex stainless steels. In this paper we tried to verify them by EBSD (electron backscatter diffraction).

A Review of Strain Analysis Using Electron Backscatter Diffraction

2011 ◽  
Vol 17 (3) ◽  
pp. 316-329 ◽  
Author(s):  
Stuart I. Wright ◽  
Matthew M. Nowell ◽  
David P. Field
Keyword(s):  
Plastic Strain ◽  
Materials Science ◽  
Electron Backscatter Diffraction ◽  
Strain Analysis ◽  
Current State ◽  
Mapping Parameters ◽  
Submicron Scale ◽  
Electron Backscatter ◽  
Ebsd Technique ◽  
Backscatter Diffraction

AbstractSince the automation of the electron backscatter diffraction (EBSD) technique, EBSD systems have become commonplace in microscopy facilities within materials science and geology research laboratories around the world. The acceptance of the technique is primarily due to the capability of EBSD to aid the research scientist in understanding the crystallographic aspects of microstructure. There has been considerable interest in using EBSD to quantify strain at the submicron scale. To apply EBSD to the characterization of strain, it is important to understand what is practically possible and the underlying assumptions and limitations. This work reviews the current state of technology in terms of strain analysis using EBSD. First, the effects of both elastic and plastic strain on individual EBSD patterns will be considered. Second, the use of EBSD maps for characterizing plastic strain will be explored. Both the potential of the technique and its limitations will be discussed along with the sensitivity of various calculation and mapping parameters.

Measurement of Crystal Grain Size of Austenitic Stainless Steels under Low-Cycle Fatigue by EBSD Techniques

2010 ◽  
Vol 452-453 ◽  
pp. 809-812
Author(s):  
Takayuki Mori ◽  
Teruaki Yamada ◽  
Masatoshi Kuroda ◽  
Masayuki Kamaya
Keyword(s):  
Grain Size ◽  
Fatigue Damage ◽  
Stainless Steels ◽  
Electron Backscatter Diffraction ◽  
Low Cycle Fatigue ◽  
Austenitic Stainless Steels ◽  
Strain Range ◽  
Total Strain Range ◽  
Number Of Cycles ◽  
Backscatter Diffraction

Electron backscatter diffraction (EBSD) in conjunction with scanning electron microscopy was used to assess the fatigue damage induced in stainless steels. The parameter of the crystal grain size was devised in order to evaluate the fatigue damage in terms of the crystal grain size. It was concluded that the fatigue damage could be evaluated by the EBSD measurements using the relationship between the total strain range, the number of cycles and the crystal grain size.

OS1205 Evaluation of Low Cycle Fatigue Damage for Type 316 Stainless Steels by Electron Backscatter Diffraction

2008 ◽  
Vol 2008 (0) ◽  
pp. _OS1205-1_-_OS1205-2_
Author(s):  
Teruaki YAMADA ◽  
Masayuki KAMAYA ◽  
Masatoshi KURODA ◽  
Takeshi YASUDA ◽  
Takuya DAIBA ◽  
...  
Keyword(s):  
Fatigue Damage ◽  
Stainless Steels ◽  
Electron Backscatter Diffraction ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Electron Backscatter ◽  
Backscatter Diffraction

Oxide Scales Grown on Stainless Steels during Simulated Reheat

2006 ◽  
Vol 15-17 ◽  
pp. 792-797 ◽  
Author(s):  
M.A.E. Jepson ◽  
C.L. Verona ◽  
R.L. Higginson
Keyword(s):  
Electron Microscopy ◽  
Stainless Steels ◽  
316L Stainless Steel ◽  
Electron Backscatter Diffraction ◽  
Oxide Scales ◽  
Crystal Direction ◽  
X Ray ◽  
Electron Backscatter ◽  
Backscatter Diffraction ◽  
Scanning Electron

including, external oxide layers, internal grain boundary oxidation structures as well as many other forms of internal oxidation. During the present study, needle like grains of hematite have been observed within the top layers of a number of external oxide scales formed during simulated reheat of 316L stainless steel. It is believed that these needles are caused by the decomposition of an iron rich spinel (approximated to magnetite) along a preferred crystal direction within the spinel grains. The needles have been studied using optical microscopy, scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDS) and electron backscatter diffraction (EBSD).

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