Grain-boundary structure and precipitation in sensitized austenitic stainless steel

被引:104
作者
Kokawa, H [1 ]
Shimada, M [1 ]
Sato, YS [1 ]
机构
[1] Tohoku Univ, Grad Sch, Dept Mat Proc, Sendai, Miyagi 9808579, Japan
来源
JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY | 2000年 / 52卷 / 07期
关键词
D O I
10.1007/s11837-000-0159-0
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Grain-boundary carbide precipitation and intergranular corrosion in sensitized austenite stainless steel were examined by transmission electron microscopy to clarify the effect of grain-boundary structure on precipitation and corrosion. The propensity to intergranular precipitation depends strongly on the grain-boundary structure. Carbide precipitates lend to be detected nt grain boundaries with higher Sigma values or larger deviation angles (Delta theta) from low-Sigma coincidence site lattice misorientations. The more ordered boundary requires a longer time for intergranular carbide precipitation and corrosion than less ordered or random boundaries.
引用
收藏
页码:34 / 37
页数:4
相关论文
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