Abstract
Optical and electron microscopy have been employed to study structural changes in an FeNiMn martensite (α′) during heating. The reverse transformation (α′ → γs) occurs between 500 and 600°C and appears to be divided into three classes. The first is a long-range diffusional transformation which occurs by nucleation and growth. This type of reversion is observed on slow heating (5°C s-1). The formation of secondary austenite (γs) is observed at the lath interfaces. The second is a short-range diffusional transformation observed on heating at intermediate rates (approximately 50°C s-1) which results in a refined, equiaxed austenite and resembles a massive transformation. The third is a diffusionless transformation observed on fast heating (100°C s-1) and appears to be martensitic in nature.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 227-233 |
| Number of pages | 7 |
| Journal | Materials Science and Engineering |
| Volume | 93 |
| Issue number | C |
| DOIs | |
| State | Published - Jan 1 1987 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Formation of secondary austenite during the α′-γ transformation in an FeNiMn alloy. / Singh, Jogender; Wayman, C. M.
In: Materials Science and Engineering, Vol. 93, No. C, 01.01.1987, p. 227-233.Research output: Contribution to journal › Article
TY - JOUR
T1 - Formation of secondary austenite during the α′-γ transformation in an FeNiMn alloy
AU - Singh, Jogender
AU - Wayman, C. M.
PY - 1987/1/1
Y1 - 1987/1/1
N2 - Optical and electron microscopy have been employed to study structural changes in an FeNiMn martensite (α′) during heating. The reverse transformation (α′ → γs) occurs between 500 and 600°C and appears to be divided into three classes. The first is a long-range diffusional transformation which occurs by nucleation and growth. This type of reversion is observed on slow heating (5°C s-1). The formation of secondary austenite (γs) is observed at the lath interfaces. The second is a short-range diffusional transformation observed on heating at intermediate rates (approximately 50°C s-1) which results in a refined, equiaxed austenite and resembles a massive transformation. The third is a diffusionless transformation observed on fast heating (100°C s-1) and appears to be martensitic in nature.
AB - Optical and electron microscopy have been employed to study structural changes in an FeNiMn martensite (α′) during heating. The reverse transformation (α′ → γs) occurs between 500 and 600°C and appears to be divided into three classes. The first is a long-range diffusional transformation which occurs by nucleation and growth. This type of reversion is observed on slow heating (5°C s-1). The formation of secondary austenite (γs) is observed at the lath interfaces. The second is a short-range diffusional transformation observed on heating at intermediate rates (approximately 50°C s-1) which results in a refined, equiaxed austenite and resembles a massive transformation. The third is a diffusionless transformation observed on fast heating (100°C s-1) and appears to be martensitic in nature.
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U2 - 10.1016/0025-5416(87)90428-9
DO - 10.1016/0025-5416(87)90428-9
M3 - Article
AN - SCOPUS:0023404038
VL - 93
SP - 227
EP - 233
JO - Materials Science and Engineering
JF - Materials Science and Engineering
SN - 0025-5416
IS - C
ER -