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.
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页码：34 / 37
页数：4
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