The Morphology of Strain-Induced Martensite in Fe-Ni Alloys

Tamura, Imao; Maki, Tadashi; Hato, Hiroshi

doi:10.2320/jinstmet1952.33.12_1376

Cited by 12 publications

(5 citation statements)

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“…1 (a). In case The present authors (17) have reported that there are two types of strain-induced martensites (that is, partially twinned lenticular martensitee and dislocated butterfly martensite) depending on deformation temperature, and suggested that the transformation mechanisms of these martensites are different from each other. It has been again confirmed in this investigation that the characteristic butterfly martensites are induced by deforma-% Ni-0.26% C alloy in addition to the usual lenticular martensite.…”

Section: The Morphology Of Strain-induced Martensitementioning

confidence: 58%

“…There have been many investigations on the straininduced martensitic transformation in Fe-Cr-Ni and an investigation on the strain-induced martensite has been few in number, although many investigations have been done on the thermally transformed martensite (9) The present authors (17) have reported that the characteristic martensite, whose morphology is quite different from that of thermally transformed martensite, was induced by deformation at temperatures between 0 and having the Ms temperatures below room temperature.…”

Section: Introductionmentioning

confidence: 83%

“…The butterfly martensite formed at a relatively high temperature as shown in Photo. 1 (c) contains many dislocations but no transformation twins and no mid-rib (17).…”

Section: Substructure Of Martensitementioning

confidence: 99%

“…The orientation relationship between the butterfly martensite and austenite would be the K-S type (17). The lenticular martensite has an apparent mid-rib and contains transformation twins.…”

Section: Substructure Of Martensitementioning

confidence: 99%

“…In a previous paper (17), however, it was difficult to clarify the relation between morphology and form ation temperature of strain-induced martensite, because the Ms temperature of the alloy used was relatively high…”

Section: Introductionmentioning

confidence: 98%

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The Morphology of Strain-Induced Martensite and Thermally Transformed Martensite in Fe–Ni–C Alloys

et al. 1972

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The relation between formation temperature and morphology of strain-induced and thermally transformed martensites in various Fe-Ni-C alloys has been studied by means of optical and transmission electron microscopy. The morphology of the strain-induced martensite varied with the formation temperature (i. e., deformation temperature below the Md) even in the The Ms temperature was remarkably depressed in these alloys with decrease in austenitizing temperature. Therefore, the relation between formation temperature and morphology of thermally transformed martensite was clearly determined in the same alloy by utilizing this phenomenon (thermal stabilization of austenite). The morphology of thermally transformed martensite also varied with the formation temperature even in the same alloy. Three types of the martensite were also observed in the same morphologies, and they were similarly formed in the same temperature ranges as the strain-induced martensites, respectively. The main factor determining the morphology of martensite (both the strain-induced and thermally transformed martensites) in Fe-Ni-C alloys was considered to be the formation temperature.

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Section: The Morphology Of Strain-induced Martensitementioning

confidence: 58%

Section: Introductionmentioning

confidence: 83%

“…The butterfly martensite formed at a relatively high temperature as shown in Photo. 1 (c) contains many dislocations but no transformation twins and no mid-rib (17).…”

Section: Substructure Of Martensitementioning

confidence: 99%

Section: Substructure Of Martensitementioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations