Three-dimensional reconstruction of cleavage fracture surface for duplex stainless steel
Three-dimensional reconstruction of cleavage fracture surface for duplex stainless steel
复制标题
DOI：
10.1016/s0042-207x(01)00469-9
复制
发表时间：
2002-05-27
期刊：
影响因子：
4
通讯作者：
Kitagawa, Y
中科院分区：
文献类型：
--
作者：
Kuroda, T;Ikeuchi, K;Kitagawa, Y
研制了一套基于立体扫描电子显微镜视差测量的三维地形重建系统。该系统利用基于区域的匹配算法，根据相应位置之间的相对位移计算出断口表面的数字高程，然后在PC机上重建三维地形的数字高程模型，并将该系统应用于双相不锈钢的延性断口。重建图像明显显示出细长的韧窝断口，起因于夹杂物和解理裂纹被奥氏体晶阻挡。并对444型铁素体不锈钢解理断口进行了重构，检测了河纹解理台阶的高程。(C)2002爱思唯尔科学有限公司。保留所有权利。
A reconstruction system of three-dimensional topography by parallax measurement of stereoscopic scanning electron microscopy has been developed. A digital elevation of the fracture surface was calculated from the relative displacement between corresponding positions using an area-based matching algorithm, and then digital elevation models of the three-dimensional topography were reconstructed on the monitor of a personal computer.The system was applied to the ductile fracture surfaces of duplex stainless steel. The reconstructed images obviously revealed an elongated dimple fracture originating from inclusions and cleavage cracks arrested by austenite grain. The reconstruction of the cleavage fracture surface of type 444 ferritic stainless steel was also made, and the elevation of cleavage steps of the river pattern was detected. (C) 2002 Elsevier Science Ltd. All rights reserved.