金属学报  1984, Vol. 20 Issue (2): 143-220

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RE对Fe-Cr-Al合金α-Al_2O_3层晶粒生长的影响

李碚;颜玉新

包头冶金研究所;包头冶金研究所

INFLUENCE OF RE ADDITION ON GRAIN GROWTH OFα-Al_2O_3 LAYER ON Fe-Cr-Al ALLOY

by LIBei; YAN Yuxin (Baotou Research Institute of Metallurgy; Nei Monggol)(Manuscript received 1 July; 1980; revised manuscript 1 August; 1983)

李碚;颜玉新. RE对Fe-Cr-Al合金α-Al_2O_3层晶粒生长的影响[J]. 金属学报, 1984, 20(2): 143-220.
, . INFLUENCE OF RE ADDITION ON GRAIN GROWTH OFα-Al_2O_3 LAYER ON Fe-Cr-Al ALLOY[J]. Acta Metall Sin, 1984, 20(2): 143-220.

摘要 参考文献 相关文章 Metrics 全文: PDF(2475 KB)   摘要: Fe-23Cr-6Al合金在1300℃氧化时,α-Al_2O_3层的单层晶粒首先生成柱状晶,随后由于柱状晶的横向生长和外层等轴晶区的形成和扩展,氧化层晶粒的柱状特征逐渐减弱。添加RE可增大柱状晶的纵向生长速率,减小其横向生长速率和外层等轴晶的生长速率,从而增强氧化层晶粒的柱状特征。在不含RE合金的氧化层表面有较多的晶须和小晶体,表明α-Al_2O_3层生长时伴有Al离子向外扩散。认为RE阻止此扩散是影响氧化层晶粒生长、改善氧化层粘附性的一种可能原因。 Abstract：When the Fe-23Cr-6Al alloy is under oxidation at 1300℃, the α-Al_2O_3 grains of single layer are formed initially as columnar crystals, and then, their columnar feature degenerated progressively owing to the columnar grains growing along transverse direction and the development of outer layer oxide consisted of equiaxial crystals. If the RE added, the growth rate of columnar grain along longitudinal direction is increased and along transverse direction decreased, as well as the growth rate of equiaxial grain of outer layer oxide also decreased. Consequently, their columnar feature become more intensive. For the alloy without RE, more crystalline whiskers and fine crystals are found on the surface of oxide layer. It may be considered that the Al ions diffusion through α-Al_2O_3 layer outwards is prevented by RE addition, and the oxide layer adherence is then improved. 收稿日期: 1984-02-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 李碚 颜玉新 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1984/V20/I2/143 1 李碚;骆继群,金属学报,16(1980) ,401． 2 Golightly, F. A.; Stott, F. H.; Wood, G. C., Oxid. Met., 10 (1976) , 163． 3 Giggins, C. S.; Pettit, F, S., PWA Rep. 5364, (1975) . 4 李碚;骆继群;于洪香,钢铁,16(1981) ,№9,44． 5 Mistier, R. E.; Coble, R. L., J. Am. Ceram. Soc., 54(1971) , 60． 6 永井宏;村井照幸;三谷裕康,日本金属学会志,42(1978) ,1138． 7 Felten, E. J., J. Electrochem. Soc., 108(1961) , 490． 8 张立新;骆继勋;银耀德;李黎光;赵齐;张家芸,金属学报,17(1981) ,233． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed