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- Title
The analysis for morphological evolution and crystallography of degenerate pearlite in 100Mn13 steel.
- Authors
Xu, Z.; Ding, Z.; Liang, B.; Li, H.
- Abstract
During approximate 773 K aging treatment of 100Mn13 steel, degenerate pearlite will occur and evolve into lamellar pearlite during growth process. The microstructures of degenerate pearlite and its evolutionary lamellar pearlite are observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that after 748 K, 773 K and 798 K aging, degenerate pearlites occur at grain boundary. At growth front of degenerate pearlite forming at 773 K and 798 K, pearlite presents a morphology of short lamellae of carbide and ferrite, indicating a trend of developing into lamellar pearlite. The higher the temperature is, the more obvious the trend is, and even a conventional lamellar pearlite has developed. However, there is no morphological evolution for degenerate pearlite forming at 748 K aging. Besides, the constituents of degenerate pearlite is identified as M23C6 and ferrite, and Kurdjumov-Sachs orientation relationship exists between them, (011̅)α//(1.11̅)M23C6, [111]α//[110]M23C6. This orientation relationship maintains in morphological evolution from degenerate pearlite to lamellar pearlite.
- Subjects
TRANSMISSION electron microscopy; CRYSTALLOGRAPHY; SCANNING electron microscopy; STEEL; CRYSTAL grain boundaries
- Publication
Materialwissenschaft und Werkstoffechnik, 2020, Vol 51, Issue 9, p1251
- ISSN
0933-5137
- Publication type
Article
- DOI
10.1002/mawe.201900165