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.
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页码：3885 / 3892
页数：8
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