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

页码：34 / 37

页数：4

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