Microstructure and mechanical properties of TiN precipitation-hardened 316L stainless steel produced by hot extrusion of rapidly solidified powder

被引：0
|
作者：
Yue-Zhu, Li [1 ]
Arnberg, Lars [1 ]
Savage, Steven [1 ]
机构：
[1] Swedish Inst for Metals Research, Sweden
来源：
Materials science and engineering | 1988年 / 98卷
关键词：
Iron and Steel Metallography - Microstructures - Metallography - Precipitation - Steel - Hardening - Steel Heat Treatment - Nitriding - Steel Testing;
D O I：
10.1016/0025-5416(88)90223-6
中图分类号：
学科分类号：
摘要：
A precipitation-hardened titanium-modified 316L stainless steel has been prepared by hot extrusion of nitrided rapidly solidified powder. The microstructure and properties of the rapidly solidified powder, internally nitrided powder and extruded bulk material have been investigated. The microstructure of extrudates consists of fine austenite grains and uniformly dispersed titanium nitride particles, as well as subgrains containing dislocation tangles. Finely dispersed nitride particles suppress grain growth by pinning the grain boundaries during recrystallization. A significant improvement in tensile properties, hardness and creep strength is obtained.
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页码：531 / 534
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