对3种不同铝含量的热镀锌双相钢进行连续退火镀锌模拟试验。研究表明：wAl=009%的双相钢表面的氧化物形貌为颗粒状和长条状的氧化物；XPS分析表明，这两种氧化物为MnO和Cr2O3。含铝wAl=012%的双相钢表面均匀分布扁平状的氧化物，氧化物平均直径为1262nm。含铝wAl=04%的双相钢表面为细小弥散分布的氧化物，平均直径为707nm。除了MnO和Cr2O3，这两种双相钢表面还生成了Al2O3。Fe-Al抑制层晶粒之间的空隙程度随着铝含量的增加逐渐变大，抑制层的致密度下降，其中含铝wAl=04%的双相钢表面的抑制层晶粒粗大。从表面氧化物与锌液有效铝之间反应的角度出发解释了抑制层形貌的变化。
Three kinds of dual phase steels with different Al additions were undergone simulated continuous galvanizing processes. The research results show that the dual phase steel with 009% Al addition is covered with granules and noodles oxides on surface. XPS analysis shows that oxides consist of MnO and Cr2O3. The dual phase steel with 012% Al additions is cover with evenly distributed oxides with flat shapes. The average diameter is 1262nm. The dual phase steel containing 04% Al is covered with tiny and closely-spaced oxides with average diameter of 707nm. XPS analysis confirms that Al2O3 emerges on both steel surfaces except for MnO and Cr2O3. The space between grains of Fe-Al inhibition layers gradually increases with Al addition increased, resulting in lowered compactability of inhibition layers. The Fe-Al grains formed on dual phase steel containing 04% Al are coarse. An analysis is proposed for variations of morphologies of Fe-Al inhibition layer in terms of reactions between oxides and effective Al in zinc bath.
参考文献
| [1] | |
| [2] | Sun X., Choia K. S., Soulamia A., et al, On key factors influencing ductile fractures of Dual Phase (DP) steels[J], Mater. Sci. Eng. A, 2009, 526:140[2] Bandyopadhyay N. R., Datta S., Effect of Manganese Partitioning on Transformation Induced Plasticity Characteristics in Microalloyed Dual Phase Steels[J], ISIJ Int., 2004, 44:927[3] Yoshie A., Fujioka M., Watanabe Y., et al, Modeling Microstructural evolution and mechanical properties of steel plates produced by Thermal-Mechanical control process[J], ISIJ Int., 1992, 32:395[4] Garcia J. A., Caballero F. G., Lung T., et al, Influence of austenite grain size on overaging treatment of continuous annealed dual phase steels[J], Mater. Sci. Tech., 2007, 23:671[5] Szewczyk A. F., Gurland J., A study of the deformation and fracture of a dual-phase steel[J], Metal. Mater. Trans. A, 1982, 13:1821[6] Girault E., Mertens A., Jacques P, et al, Comparison of the effects of silicon and aluminium on the tensile behaviour of multiphase TRIP-assisted steels[J], Script. Mater. 2001, 44:885[7] Drillet P., Zermount Z., Bouleau D., et al, Selective Oxidation of high Si, Mn and Al steel grade during Recrystallization Annealing, and steel/Zn reactivity[C], Galvatech’04 Conference Proceedings, Chicago, USA, Association for Iron and Steel Technology, 2004:1123[8] Ollivier-Leduc, M.-L. Giorgi , D. Balloy, et al, Nucleation and growth of selective oxide particles on ferritic steel[J], Corros. Sci., 2010, 52:2498[9] Meyer M. De, Vanderschueren D., Cooman B.C. De, The influence of the substitution of Si by Al on the properties of cold rolled C-Mn-Si TRIP steels[J], ISIJ Int.,1999, 39:813[10] Jacques P.J., Girault E., Mertens A., et al, The development of cold-rolled TRIP-assisted multiphase steels-Al alloyed TRIP-assisted multiphase steels[J], ISIJ Int.,2001, 41:1068[11] Wang H., Deng Z.J., Lin C.J., et al, Study of microstructures between continuous annealing sheet and hot-dip galvanizing sheet of 600MPa high aluminum dual phase steel[C], Galvatech’11 Conference Proceedings, Milano, Italy, Associazione Italiana di Metallurgia, 2011:348[12] Brian R. Strohmeier, David M. Hercules, Surface spectroscopic characterization of manganese/aluminum oxide catalysts[J], J. Phys. Chem., 1984, 88:4922[13] Carver J.C., Schweitzer G.K., Carlson T.A., Use of X‐Ray Photoelectron Spectroscopy to Study Bonding in Cr, Mn, Fe, and Co Compounds[J], J. Chem. Phys., 1972, 57:973[14] Swartz W.E., Hercules, D.M., X-ray photoelectron spectroscopy of molybdenum compounds. Use of electron spectroscopy for chemical analysis (ESCA) in quantitative analysis[J], Anal. Chem. 1971, 43: 1774[15] Everett C. Oren, Frank E. Goodwin, Hot-Dip Galvanizing of Advanced High-Strength Steel Grades[C], Galvatech’04 Conference Proceedings, Chicago, USA, Association for Iron and Steel Technology, 2004: 737[16] Breeze P.A., Hartnagel H.L., Sherwood P.M.A., An investigation of anodically grown films on GaAs using X-Ray Photoelectron Spectroscopy[J], J. Electrochem. Soc., 1980, 127:454[17] Khondker R., Mertens A., Mcdermid J.R., Effect of annealing atmosphere on the galvanizing behavior of a dual phase stee[J]l, Mater. Sci. Eng. A, 2007, 463:157[18] Bellhouse E.M., Mertens A., Mcdermid J.R., Development of the surface structure of TRIP steels prior to hot-dip galvanizing[J], Mater. Sci. Eng. A, 2007, 463:147 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%