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Crystallography of upper bainite in Fe–Ni–C alloys
- Source :
-
Materials Science & Engineering: A . Sep2006, Vol. 431 Issue 1/2, p228-236. 9p. - Publication Year :
- 2006
-
Abstract
- Abstract: The upper bainite structures were investigated in Fe–9Ni–(0.15–0.5)C (mass%) alloys transformed at temperatures between 723 and 623K. A bainite packet similar to lath martensite is formed and is partitioned into blocks containing lath-shaped bainitic ferrite with the same parallel close-packed plane relationship of the K–S relationship. Its feature is categorized into three types: (A) a packet contains laths of two K–S variants with a small misorientation (sub-blocks), (B) a packet is divided by blocks largely misoriented and each block contains sub-blocks and (C) a packet is divided by blocks containing a single variant of laths. A packet of type (A) is formed at 723K in each alloy whereas the packet type becomes (B) or (C) at lower temperatures. As a result, bainite blocks are refined with decreases in transformation temperature and carbon content. In contrast, blocks and packets of lath martensite are refined with increasing carbon content. [Copyright &y& Elsevier]
- Subjects :
- *CRYSTALLOGRAPHY
*BAINITE
*ALLOYS
*METALLIC composites
Subjects
Details
- Language :
- English
- ISSN :
- 09215093
- Volume :
- 431
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: A
- Publication Type :
- Academic Journal
- Accession number :
- 21828610
- Full Text :
- https://doi.org/10.1016/j.msea.2006.06.032