Self-accomodation and morphology of 14M (7R) martensites in an Ni370at.%Al alloy

Yasukazu Murakami, K. Otsuka, S. Hanada, S. Watanabe

研究成果: ジャーナルへの寄稿記事

34 引用 (Scopus)

抄録

The self-accomodation mechanism and morphology of the unique 14M (7R) martensite was studied using single crystals of an Ni370at.%Al alloy. The self-accomodating group was identified by the X-ray diffraction technique, assisted by computer simulations, and it was found that the elastic strains around martensites are effectively cancelled out by making a variant group around the {110&}B2 pole, being similar to other β phase alloys. As a result of extensive observations using a scanning electron microscope and an optical microscope, the basic morphology of the self-accomodating group was found to consist of parallelogram bounded by type I and type II twin bounderies, which is different from the conventional diamond morphology. This basic morphology was supported by the theoretical considerations based on the phenomenological crystallographic theory, and it was shown to be favored over the diamond morphology. Furthermore, the developing mechanism of self-accomodation is proposed, on the basis of the above results.

元の言語英語
ページ(範囲)191-199
ページ数9
ジャーナルMaterials Science and Engineering A
189
発行部数1-2
DOI
出版物ステータス出版済み - 12 20 1994
外部発表Yes

Fingerprint

martensite
Martensite
Diamond
Diamonds
diamonds
parallelograms
optical microscopes
Poles
Microscopes
Electron microscopes
poles
electron microscopes
computerized simulation
Single crystals
Scanning
X ray diffraction
scanning
single crystals
Computer simulation
diffraction

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Self-accomodation and morphology of 14M (7R) martensites in an Ni370at.%Al alloy. / Murakami, Yasukazu; Otsuka, K.; Hanada, S.; Watanabe, S.

:: Materials Science and Engineering A, 巻 189, 番号 1-2, 20.12.1994, p. 191-199.

研究成果: ジャーナルへの寄稿記事

Murakami, Yasukazu ; Otsuka, K. ; Hanada, S. ; Watanabe, S. / Self-accomodation and morphology of 14M (7R) martensites in an Ni370at.%Al alloy. :: Materials Science and Engineering A. 1994 ; 巻 189, 番号 1-2. pp. 191-199.
@article{cb3acbfd134144109fb60ceed06542cc,
title = "Self-accomodation and morphology of 14M (7R) martensites in an Ni370at.{\%}Al alloy",
abstract = "The self-accomodation mechanism and morphology of the unique 14M (7R) martensite was studied using single crystals of an Ni370at.{\%}Al alloy. The self-accomodating group was identified by the X-ray diffraction technique, assisted by computer simulations, and it was found that the elastic strains around martensites are effectively cancelled out by making a variant group around the {110&}B2 pole, being similar to other β phase alloys. As a result of extensive observations using a scanning electron microscope and an optical microscope, the basic morphology of the self-accomodating group was found to consist of parallelogram bounded by type I and type II twin bounderies, which is different from the conventional diamond morphology. This basic morphology was supported by the theoretical considerations based on the phenomenological crystallographic theory, and it was shown to be favored over the diamond morphology. Furthermore, the developing mechanism of self-accomodation is proposed, on the basis of the above results.",
author = "Yasukazu Murakami and K. Otsuka and S. Hanada and S. Watanabe",
year = "1994",
month = "12",
day = "20",
doi = "10.1016/0921-5093(94)90415-4",
language = "English",
volume = "189",
pages = "191--199",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Self-accomodation and morphology of 14M (7R) martensites in an Ni370at.%Al alloy

AU - Murakami, Yasukazu

AU - Otsuka, K.

AU - Hanada, S.

AU - Watanabe, S.

PY - 1994/12/20

Y1 - 1994/12/20

N2 - The self-accomodation mechanism and morphology of the unique 14M (7R) martensite was studied using single crystals of an Ni370at.%Al alloy. The self-accomodating group was identified by the X-ray diffraction technique, assisted by computer simulations, and it was found that the elastic strains around martensites are effectively cancelled out by making a variant group around the {110&}B2 pole, being similar to other β phase alloys. As a result of extensive observations using a scanning electron microscope and an optical microscope, the basic morphology of the self-accomodating group was found to consist of parallelogram bounded by type I and type II twin bounderies, which is different from the conventional diamond morphology. This basic morphology was supported by the theoretical considerations based on the phenomenological crystallographic theory, and it was shown to be favored over the diamond morphology. Furthermore, the developing mechanism of self-accomodation is proposed, on the basis of the above results.

AB - The self-accomodation mechanism and morphology of the unique 14M (7R) martensite was studied using single crystals of an Ni370at.%Al alloy. The self-accomodating group was identified by the X-ray diffraction technique, assisted by computer simulations, and it was found that the elastic strains around martensites are effectively cancelled out by making a variant group around the {110&}B2 pole, being similar to other β phase alloys. As a result of extensive observations using a scanning electron microscope and an optical microscope, the basic morphology of the self-accomodating group was found to consist of parallelogram bounded by type I and type II twin bounderies, which is different from the conventional diamond morphology. This basic morphology was supported by the theoretical considerations based on the phenomenological crystallographic theory, and it was shown to be favored over the diamond morphology. Furthermore, the developing mechanism of self-accomodation is proposed, on the basis of the above results.

UR - http://www.scopus.com/inward/record.url?scp=0028698946&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028698946&partnerID=8YFLogxK

U2 - 10.1016/0921-5093(94)90415-4

DO - 10.1016/0921-5093(94)90415-4

M3 - Article

AN - SCOPUS:0028698946

VL - 189

SP - 191

EP - 199

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

IS - 1-2

ER -