Abstract
Microstructural evolution during the cyclic cold-rolling and annealing process in an (α + γ) microduplex stainless steel, which consists of α subgrains and fine γ particles, has been studied in detail with the aim of clarifying the mechanism of dynamic continuous recrystallization. A continuous increase in α subgrain boundary misorientation is obtained by the present processing where grain boundary sliding does not occur and the effect of increasing boundary misorientation with cumulative strain is comparable to those observed in dynamic continuous recrystallization of superplastic aluminium alloys. The increase in boundary misorientation is accounted for by the absorption of dislocations into subgrain boundaries during annealing, dislocations which had operated to accommodate the plastic strain incompatibility of the neighboring phases undergoing slip deformation. The present results show that grain boundary sliding is not indispensable but the difference in accommodation deformation between adjacent subgrains is of great importance for the dynamic continuous recrystallization during superplastic deformation.
| Original language | English |
|---|---|
| Pages (from-to) | 4491-4499 |
| Number of pages | 9 |
| Journal | Acta Materialia |
| Volume | 44 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 1996 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Polymers and Plastics
- Metals and Alloys
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Mechanism of dynamic continuous recrystallization during superplastic deformation in a microduplex stainless steel. / Tsuzaki, K.; Xiaoxu, Huang; Maki, T.
In: Acta Materialia, Vol. 44, No. 11, 11.1996, p. 4491-4499.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mechanism of dynamic continuous recrystallization during superplastic deformation in a microduplex stainless steel
AU - Tsuzaki, K.
AU - Xiaoxu, Huang
AU - Maki, T.
PY - 1996/11
Y1 - 1996/11
N2 - Microstructural evolution during the cyclic cold-rolling and annealing process in an (α + γ) microduplex stainless steel, which consists of α subgrains and fine γ particles, has been studied in detail with the aim of clarifying the mechanism of dynamic continuous recrystallization. A continuous increase in α subgrain boundary misorientation is obtained by the present processing where grain boundary sliding does not occur and the effect of increasing boundary misorientation with cumulative strain is comparable to those observed in dynamic continuous recrystallization of superplastic aluminium alloys. The increase in boundary misorientation is accounted for by the absorption of dislocations into subgrain boundaries during annealing, dislocations which had operated to accommodate the plastic strain incompatibility of the neighboring phases undergoing slip deformation. The present results show that grain boundary sliding is not indispensable but the difference in accommodation deformation between adjacent subgrains is of great importance for the dynamic continuous recrystallization during superplastic deformation.
AB - Microstructural evolution during the cyclic cold-rolling and annealing process in an (α + γ) microduplex stainless steel, which consists of α subgrains and fine γ particles, has been studied in detail with the aim of clarifying the mechanism of dynamic continuous recrystallization. A continuous increase in α subgrain boundary misorientation is obtained by the present processing where grain boundary sliding does not occur and the effect of increasing boundary misorientation with cumulative strain is comparable to those observed in dynamic continuous recrystallization of superplastic aluminium alloys. The increase in boundary misorientation is accounted for by the absorption of dislocations into subgrain boundaries during annealing, dislocations which had operated to accommodate the plastic strain incompatibility of the neighboring phases undergoing slip deformation. The present results show that grain boundary sliding is not indispensable but the difference in accommodation deformation between adjacent subgrains is of great importance for the dynamic continuous recrystallization during superplastic deformation.
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UR - http://www.scopus.com/inward/citedby.url?scp=0030286480&partnerID=8YFLogxK
U2 - 10.1016/1359-6454(96)00080-8
DO - 10.1016/1359-6454(96)00080-8
M3 - Article
AN - SCOPUS:0030286480
VL - 44
SP - 4491
EP - 4499
JO - Acta Materialia
JF - Acta Materialia
SN - 1359-6454
IS - 11
ER -