How TEM Projection Artifacts Distort Microstructure Measurements: A Case Study in a 9 pct Cr-Mo-V Steel

被引：0
作者：
Niven Monsegue
William T. Reynolds
Jeffrey A. Hawk
Mitsuhiro Murayama
机构：
[1] Regional University Alliance,National Energy Technology Laboratory
[2] Virginia Tech,Department of Materials Science and Engineering
[3] Institute of Critical Technology and Applied Science,undefined
[4] Virginia Tech,undefined
[5] National Energy Technology Laboratory,undefined
[6] U.S. Department of Technology,undefined
来源：
Metallurgical and Materials Transactions A | 2014年 / 45卷
关键词：
Carbide; Creep Testing; Lath Boundary; Projection Error; High Angle Annular Dark Field;
D O I：
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中图分类号：
学科分类号：
摘要：
Morphological data obtained from two-dimensional (2D) and three-dimensional (3D) transmission electron microscopy (TEM) observations were compared to assess the effects of TEM projection errors for submicron-size precipitates. The microstructure consisted of M23C6 carbides in a 9 pct Cr-Mo-V heat resistant steel before and after exposure to creep conditions. Measurements obtained from about 800 carbides demonstrate that particle size and spacing estimates made from 2D observations overestimate the more accurate values obtained from 3D reconstructions. The 3D analysis also revealed the M23C6 precipitates lengthen anisotropically along lath boundary planes, suggesting that coarsening during the early stage of creep in this alloy system is governed by grain boundary diffusion.
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页码：3708 / 3713
页数：5
相关论文
共 94 条
[1]  
Rojas D.(2011)undefined Mater. Sci. Eng. A 528 5164-76
[2]  
Garcia J.(2009)undefined Mater. Sci. Eng. A 510–11 180-84
[3]  
Prat O.(2010)undefined Mater. Sci. Eng. A 527 3864-76
[4]  
Sauthoff G.(1997)undefined Acta Mater. 45 4901-07
[5]  
Kaysser-Pyzalla A.R.(2011)undefined Mater. Sci. Eng. A 528 1280-86
[6]  
Wang Y.(2004)undefined Mater. Sci. Eng. A 387 565-69
[7]  
Mayer K.H.(2004)undefined Mater. Sci. Eng. A 378 299-303
[8]  
Scholz A.(2011)undefined Metall. Mater. Trans. A 42 3084-94
[9]  
Berger C.(2008)undefined Sci. Technol. Adv. Mater. 9 013002-89
[10]  
Chilukuru H.(2004)undefined Mater. Sci. Eng. A 374 82-24
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