材料科学
奥氏体
铁氧体(磁铁)
微观结构
垂直的
腐蚀
极限抗拉强度
各向异性
胶卷机
复式(建筑)
退火(玻璃)
冶金
纹理(宇宙学)
复合材料
光学
几何学
磁各向异性
磁化
DNA
数学
物理
图像(数学)
量子力学
人工智能
计算机科学
遗传学
生物
磁场
作者
Jiantao Zhang,He Zhu,Xiaoying Xi,Xingyi Li,Zhiyu Xiao
标识
DOI:10.1016/j.jmrt.2023.08.199
摘要
Mechanical and corrosion behaviors perpendicular to build direction (XOY) and along build direction (XOZ) of UNS S31803 duplex stainless steel (DSS) fabricated by laser powder bed fusion (LPBF) were investigated. With the post-annealing, the steel exhibited a ferrite-austenite microstructure. For XOY plane, austenite displayed a primarily <101> texture while ferrite kept <001> preferred orientation, and mainly held a Nishiyama-Wassermann orientation relationship. However, for XOZ plane, austenite showed a mixed texture. The average size of ferrite grains was larger for XOZ plane than XOY. The austenite in XOY plane was mostly island morphology grains, while in XOZ plane, there were a large number of coarse columnar grains. A higher geometrically necessary dislocation density and proportion of low-angle grain boundaries on XOY plane were observed. The yield strength and ultimate tensile strength values perpendicular to build direction were higher than those along build direction. While the total elongation perpendicular to build direction was lower. Moreover, the XOY plane shows slightly better corrosion resistance than the XOZ.
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