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电子衍射花样标定练习

金属材料电子显微分析. 电子衍射花样标定练习. 燕山大学材料科学与工程学院 材料现代分析测试方法课程教学团队 张静武教授 / 博导. 30°. 例题. 马氏体: R1 、 R2 、 R3 分别等于 10.2mm 、 10.2mm 、 17.0mm , R1 和 R2 夹角 60° , R1 和 R3 夹角 30° 相机常数= 2.05mm·nm. 2.05mm.nm / 10.2=0.201 2.05mm.nm / 17.0=0.120. ①. ②. α- Fe

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电子衍射花样标定练习

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  1. 金属材料电子显微分析 电子衍射花样标定练习 燕山大学材料科学与工程学院 材料现代分析测试方法课程教学团队 张静武教授/博导

  2. 30° 例题 马氏体: R1、R2、R3分别等于10.2mm、10.2mm、17.0mm ,R1和R2夹角60°, R1和R3夹角30° 相机常数=2.05mm·nm 2.05mm.nm / 10.2=0.201 2.05mm.nm / 17.0=0.120 ① ② α-Fe 110 200 112 022 130 222 123 004 2.030 1.433 1.170 1.013 0.906 0.828 0.766 0.717

  3. ③ ⑤ 011 112 011 110 110 110 112 101 101 60° 000 30° 011 110 ④ 101 000 ⑥ conΦ= 3 / 3.464 = 0.866 Φ=29.99 ° [ ] [ ] ⑦ 1 uvw 1 = 1

  4. 练习一 奥氏体: R1、R2、R3分别等于10.0mm、10.0mm、16.8mm R1和R2夹角70° ,R1和R3夹角35°, 相机常数=2.05mm.nm α-Fe : R1、R2、R3分别等于8.7mm、15.0mm、15.0mm R1和R2夹角74° ,相机常数=1.760mm.nm Ni(镍基高温合金FCC) R1、R2、R3分别等于12.4mm、20.3mm、23.7mm R1和R2夹角90° ,相机高度770mm 波长0.00334nm

  5. Ni-Cubic d(A) hkl 2.0340 111 1.7620 200 1.2460 220 1.0624 311 1.0172 222 0.8810 400 Fe-Cubic d(A) hkl 2.0268 110 1.4332 200 1.1702 211 1.0134 220 0.9064 310 0.8275 222 Fe-Cubic d(A) hkl 2.0701 111 0.17928 200 0.12677 022 0.10811 113 0.10350 222 0.08964 004

  6. 练习3:Fe-C加Nb Orthorhombic-Nb2 C d(A) hkl 2.6830 420 1.5670 460 1.3460 840 0.9934 673 Hexagonal- Nb2 C d(A) hkl 2.6820 100 1.5510 110 1.3440 200 0.9950 211 Cubic -Nb C d(A) hkl 2.5809 111 1.5804 220 1.3477 311 0.9994 420 NbC R1-R2=90° R1-R3=59° Lλ=19.14mm·nm 系-低指数-误差

  7. 练习4:铸铁 R1、R2、R3分别等于15.0mm、15.0mm、15.0mm R1和R2夹角60°,相机常数=3.19mm.nm 立方/六方

  8. 练习5:Fe3C R1=9.8 R2=10.0 R1-R2=95°Lλ=2.05mm·nm Fe3 C Orthorhombic d(A) hkl 2.1074 211 2.0678 102 1.2162 133 1.1121 313

  9. 立方 Fe 的面间距

  10. 正交系花样-渗碳体晶格常数

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