Gong Y F, Birosca S, Kim H S, De Cooman B C
Materials Design Laboratory, Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, South Korea.
J Microsc. 2008 Jun;230(Pt 3):424-34. doi: 10.1111/j.1365-2818.2008.02002.x.
The gas atmosphere in continuous annealing and galvanizing lines alters both composition and microstructure of the surface and sub-surface of sheet steels. The alloying element enrichments and the oxide morphology on transformation-induced plasticity steel surfaces are strongly influenced by the dew point of the furnace atmosphere and annealing temperature. The formation of a thin oxide film and enrichment of the alloying elements during annealing may result in surface defects on galvanized sheet products. The present contribution reports on the use of microanalysis techniques such as electron backscatter diffraction, glow discharge optical emission spectroscopy and electron probe micro-analysis for the detailed surface analysis of inter-critically annealed transformation-induced plasticity steel such as oxide phase determination, microstructure and microtexture evolutions.
连续退火和镀锌生产线中的气体氛围会改变薄钢板表面和次表面的成分及微观结构。相变诱发塑性钢表面的合金元素富集和氧化物形态受炉内气氛露点和退火温度的强烈影响。退火过程中薄氧化膜的形成和合金元素的富集可能导致镀锌板材产品出现表面缺陷。本文报道了利用电子背散射衍射、辉光放电光发射光谱和电子探针微分析等微观分析技术，对临界区退火的相变诱发塑性钢进行详细的表面分析，如氧化物相测定、微观结构和微观织构演变。
