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木虫 (著名写手)

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[交流] 【讨论】EBSD中关于取向差的描述? 已有7人参与

请问EBSD软件后处理中关于取向差的描述:
1. Misorientation profile
2. Misorientation angle distribution
两者的区别,以及哪种情况下使用哪个?谢谢

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[ Last edited by ding2008212 on 2011-3-25 at 12:16 ]
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朱小时10

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引用回帖:
6楼: Originally posted by alun2245 at 2013-04-11 20:30:41
追问一下,如何求Misorientation Angle Distribution的平均取向差呢?

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8楼2017-11-13 14:27:36
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tonefly

金虫 (正式写手)

(欢欢)(金币+3):谢谢,讲的挺明白的! 2010-08-09 16:45:50
Misorientation profile用来描述线取向差分布,在一张mapping图中,你点Misorientationtion profile profile,然后拉一条直线,软件会显示沿直线取向点的相邻取向
差分布;Misorientation Angle Distribution 则显示的是全局的(整张mapping图中的标定点)的取向差分布。

Misorientation profile可以用来描述单个晶粒的分裂模式,例如有的晶粒的分裂模式是锯齿状的,有的晶粒则会发现Misorientation profile是接近单调的。

Misorientation Angle Distribution可以分析是否存在特殊晶界,比如低层错能金属的
退火孪晶。
2楼2010-08-09 16:15:16
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gujinlei

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(欢欢)(金币+2):谢谢提供资料! 2010-08-09 16:46:11
Misorientation Profile: Show the misorientations along a line through the scan area. The misorientations between neighboring points on the line as well as misorientations between points on the line and the starting point can be shown. It will show up to 100 points on a line. The misorientation profile can be accessed in one of two ways. 1) in the usual creation of a chart. In this case, the data points will be selected in the order they were collected during a scan. It is, thus, really only applicable to data from a line scan or collected manually. 2) By pressing the vector button on the highlighting toolbar and then drawing a line on a map. The profile is then calculated for the points on the line on the map. (After pressing the vector button, several continuous line segments may be drawn by first clicking the left mouse button and then dragging the mouse to the next position and clicking with the right mouse button - to end the line segments use the left mouse button again). An example is shown below.


Misorientation Angle: Shows the distribution of grain boundary misorientations. In addition, the uncorrelated (see the discussion on correlated vs. uncorrelated in the MDF section) and random distributions (i.e. the MacKenzie plot which shows the misorientation distribution for a purely random texture) can be shown. Another option allows the user to force the software to only consider boundaries between recognized grains in the distribution. This will generally affect the low angle boundaries much more than the high angle boundaries as shown in the figure below.

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3楼2010-08-09 16:21:41
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木虫 (著名写手)

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引用回帖:
Originally posted by tonefly at 2010-08-09 16:15:16:
Misorientation profile用来描述线取向差分布,在一张mapping图中,你点Misorientationtion profile profile,然后拉一条直线,软件会显示沿直线取向点的相邻取向
差分布;Misorientation Angle Distribution 则 ...

我想再问下你:
Misorientation Angle Distribution 中有两种类型,一种是Correlated, 一种是Uncorrelated,两种的主要区别是什么,谢谢!
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4楼2010-08-09 16:47:49
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