Digital holographic microscopy as a new technique for quantitative measurement of microstructural corrosion in austenitic stainless steel

被引：18
作者：
Asgari, P. [1 ]
Pourvais, Y. [2 ,3 ]
Abdollahi, P. [2 ]
Moradi, A. R. [4 ,5 ]
Khamedi, R. [2 ]
Darudi, A. [1 ]
机构：
[1] Univ Zanjan, Dept Phys, POB 45195-313, Zanjan, Iran
[2] Univ Zanjan, Dept Mech Engn, POB 45195-313, Zanjan, Iran
[3] Univ Tehran, Dept Phys, POB 14395-547, Tehran, Iran
[4] Inst Res Fundamental Sci IPM, Sch Nano Sci, POB 19395-5531, Tehran 19395, Iran
[5] Inst Adv Studies Basic Sci, Opt Res Ctr, POB 45137-66731, Zanjan, Iran
来源：
MATERIALS & DESIGN | 2017年 / 125卷
关键词：
Reflective digital holographic microscopy; Austenitic stainless steel; Intergranular corrosion; ATOMIC-FORCE MICROSCOPY; INTERGRANULAR CORROSION; BEHAVIOR; TEMPERATURE; EVOLUTION; DYNAMICS; ATTACK; FIELD; ZONE;
D O I：
10.1016/j.matdes.2017.03.085
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of this paper is to introduce reflective digital holographic microscopy (rDHM) as a new method for quantitative evaluation of corrosion. Despite the commonly-used evaluation methods, rDHM does not require scanning, while it measures the microstructural height profile of the corroded sample surface within a macroscale area. Based on the height profile across the corroded grain boundaries, a quantitative criterion is suggested to distinguish between intergranular and transgranular corrosion. The experimental results show the capability of rDHM to analyse the microstructural corrosion in AISI 304 stainless steel. The presented method can also be applied as a surface characterization method for analysis of a variety of metallurgic effects such as crystal elasticity and crystal orientation.
引用
收藏
页码：109 / 115
页数：7
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