Reproducible Surface Contrasting and Orientation Correlation of Low-Carbon Steels by Time-Resolved Beraha Color Etching
Reproducible Surface Contrasting and Orientation Correlation of Low-Carbon Steels by Time-Resolved Beraha Color Etching
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DOI：
10.1520/mpc20160067
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发表时间：
2016-01-01
影响因子：
1.1
通讯作者：
Muecklich, F.
中科院分区：
文献类型：
--
作者：
Britz, D.;Hegetschweiler, A.;Muecklich, F.
彩色蚀刻剂在工业应用中具有巨大的潜力，并且已经进行了许多研究以更好地理解蚀刻过程。然而，仍然缺乏可重复性和对正在进行的过程的扎实了解。本文对焦亚硫酸钾Beraha彩色蚀刻的再现性进行了系统的研究。通过对蚀刻过程的原位观察，可以跟踪Beraha蚀刻的不同状态。结果表明，在双相钢的蚀刻开始时，通过溶解第二相中较不贵重的部分而形成的第二相的对比是主要的对比。罕见的是，晶界几乎不受攻击。基体颗粒的显色具有取向敏感性，并且通过与电子背散射衍射（EBSD）测量的比较表明，相似取向的颗粒具有相似的颜色。
Color etchants have a huge potential in industrial applications and numerous investigations have been made to obtain a better understanding of the etching process. However, reproducibility and a solid knowledge of the ongoing processes are still missing. The work presented is a systematic study of the reproducibility of the Beraha color etching with potassium metabisulfite. By in situ observation of the etching process, the different states of the Beraha etching could be followed. It was shown that, at the beginning of the etching of dual-phase steels, the contrasting of the second phase by dissolving the less noble part of the second phase is the predominant contrast. Uncommonly, grain boundaries are hardly attacked. The color development of matrix grains is orientation sensitive and it was shown by comparison with electron backscatter diffraction (EBSD) measurements, that similar orientated grains have similar colors.