TY - JOUR
T1 - Grain Refinement by Cyclic Displacive Forward/Reverse Transformation in Fe-High-Ni Alloys
AU - Chiba, Tadachika
AU - Hassan, Shirazi
AU - Miyamoto, Goro
AU - Furuhara, Tadashi
PY - 2017/5/30
Y1 - 2017/5/30
N2 - A novel method for grain refinement of martensite structures was proposed, in which transformation strain is accumulated by cyclic displacive forward and reverse transformations. This method can refine martensite structures in an Fe-18Ni alloy because a high density of austenite dislocations is introduced by a displacive reverse transformation in addition to an inheritance of dislocations in body-centered cubic martensite into austenite during cyclic transformation. The addition of a small amount of carbon accelerates structure refinement significantly, which results in the formation of ultra-fine-grained structures after ten cycles.
AB - A novel method for grain refinement of martensite structures was proposed, in which transformation strain is accumulated by cyclic displacive forward and reverse transformations. This method can refine martensite structures in an Fe-18Ni alloy because a high density of austenite dislocations is introduced by a displacive reverse transformation in addition to an inheritance of dislocations in body-centered cubic martensite into austenite during cyclic transformation. The addition of a small amount of carbon accelerates structure refinement significantly, which results in the formation of ultra-fine-grained structures after ten cycles.
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U2 - 10.1007/s11661-017-4152-4
DO - 10.1007/s11661-017-4152-4
M3 - Article
AN - SCOPUS:85019651915
SP - 1
EP - 7
JO - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
JF - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
SN - 1073-5623
ER -