FURTHER INVESTIGATIONS ON MARTENSITES IN FE-0.5WT-PERCENT-C AND FE-0.5WT-PERCENT-C-24WT-PERCENT NI MELT SPUN RIBBONS

被引：5
|
作者：
SAMUEL, FH
机构：
[1] Central Metallurgical Research &, Development Inst, Cairo, Egypt, Central Metallurgical Research & Development Inst, Cairo, Egypt
来源：
JOURNAL OF MATERIALS SCIENCE | 1987年 / 22卷 / 11期
关键词：
HEAT TREATMENT - Annealing - IRON AND STEEL METALLOGRAPHY - Martensite - IRON NICKEL ALLOYS - Structure - METAL FORMING - Spinning;
D O I：
10.1007/BF01133336
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The types of martensites occurring in Fe-C and Fe-Ni-C melt spun ribbons in the as-solidified and after heat treatment conditions has been investigated using transmission electron microscopy. It has been found that melt spinning of Fe-0. 5 wt% C induces a dislocated martensitic structure at room temperature even for grains as fine as 3 mu m. The martensite laths are separated by thin layers of retained austenite. Some of the martensite laths exhibit a twin relation. The dislocations within the laths are mainly screw. The counterpart alloy, Fe-0. 5 wt% C-24 wt% Ni exhibits 100% austenite under similar conditions. Increasing the austenite grain size upon annealing enhances martensitic transformation. The present work is concentrated on the details of butterfly martensite obtained in these ribbons.
引用
收藏
页码：3885 / 3892
页数：8
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