REVERSION PROCESS OF DEFORMATION INDUCED MARTENSITE TO AUSTENITE IN METASTABLE AUSTENITIC STAINLESS STEELS.

Kouki Tomimura, Setsuo Takaki, Youichi Tokunaga

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The reversion process of martensite ( alpha prime ) to austenite ( gamma ) was investigated using 15. 62 percent Cr-9. 83 percent Ni (16-10) and 17. 62 percent Cr-8. 78 percent Ni (18-9) steels with metastable austenitic structure by means of transmission electron microscopy and magnetic analysis. The used steels transform to lath alpha prime from gamma by 90 percent cold rolling, and reverse to gamma again by the following annealing at temperature above about 900 K. The reversion processes are greatly different in the two steels. The difference is clear for 923 K isothermal annealing after 90 percent cold rolling. The results are: (1) for 16-10 steel, alpha prime reverses to gamma during heating up to 923 K by a martensitic shear transformation. The gamma structure contains high density of dislocations and traces of alpha prime block which was induced by cold rolling. During annealing at 923 K, the reversed gamma is refined to 0. 5 mu m in grain size by a recovery process. (2) for 18-9 steel, alpha prime reverses to gamma during annealing at 923 K by a diffusional nucleation-growth process. (3) The reversion process of alpha prime to gamma is greatly dependent on the composition of steels and annealing temperature.

Original languageEnglish
Pages (from-to)1649-1656
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume74
Issue number8
DOIs
Publication statusPublished - Jan 1 1988

Fingerprint

austenitic stainless steels
Steel
Austenitic stainless steel
austenite
martensite
Martensite
Austenite
steels
cold rolling
Cold rolling
annealing
Annealing
Isothermal annealing
Nucleation
grain size
recovery
nucleation
shear
Transmission electron microscopy
Heating

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

REVERSION PROCESS OF DEFORMATION INDUCED MARTENSITE TO AUSTENITE IN METASTABLE AUSTENITIC STAINLESS STEELS. / Tomimura, Kouki; Takaki, Setsuo; Tokunaga, Youichi.

In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 74, No. 8, 01.01.1988, p. 1649-1656.

Research output: Contribution to journalArticle

@article{608d65693ee242f49fef12bd14a078f1,
title = "REVERSION PROCESS OF DEFORMATION INDUCED MARTENSITE TO AUSTENITE IN METASTABLE AUSTENITIC STAINLESS STEELS.",
abstract = "The reversion process of martensite ( alpha prime ) to austenite ( gamma ) was investigated using 15. 62 percent Cr-9. 83 percent Ni (16-10) and 17. 62 percent Cr-8. 78 percent Ni (18-9) steels with metastable austenitic structure by means of transmission electron microscopy and magnetic analysis. The used steels transform to lath alpha prime from gamma by 90 percent cold rolling, and reverse to gamma again by the following annealing at temperature above about 900 K. The reversion processes are greatly different in the two steels. The difference is clear for 923 K isothermal annealing after 90 percent cold rolling. The results are: (1) for 16-10 steel, alpha prime reverses to gamma during heating up to 923 K by a martensitic shear transformation. The gamma structure contains high density of dislocations and traces of alpha prime block which was induced by cold rolling. During annealing at 923 K, the reversed gamma is refined to 0. 5 mu m in grain size by a recovery process. (2) for 18-9 steel, alpha prime reverses to gamma during annealing at 923 K by a diffusional nucleation-growth process. (3) The reversion process of alpha prime to gamma is greatly dependent on the composition of steels and annealing temperature.",
author = "Kouki Tomimura and Setsuo Takaki and Youichi Tokunaga",
year = "1988",
month = "1",
day = "1",
doi = "10.2355/tetsutohagane1955.74.8_1649",
language = "English",
volume = "74",
pages = "1649--1656",
journal = "Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan",
issn = "0021-1575",
publisher = "一般社団法人 日本鉄鋼協会",
number = "8",

}

TY - JOUR

T1 - REVERSION PROCESS OF DEFORMATION INDUCED MARTENSITE TO AUSTENITE IN METASTABLE AUSTENITIC STAINLESS STEELS.

AU - Tomimura, Kouki

AU - Takaki, Setsuo

AU - Tokunaga, Youichi

PY - 1988/1/1

Y1 - 1988/1/1

N2 - The reversion process of martensite ( alpha prime ) to austenite ( gamma ) was investigated using 15. 62 percent Cr-9. 83 percent Ni (16-10) and 17. 62 percent Cr-8. 78 percent Ni (18-9) steels with metastable austenitic structure by means of transmission electron microscopy and magnetic analysis. The used steels transform to lath alpha prime from gamma by 90 percent cold rolling, and reverse to gamma again by the following annealing at temperature above about 900 K. The reversion processes are greatly different in the two steels. The difference is clear for 923 K isothermal annealing after 90 percent cold rolling. The results are: (1) for 16-10 steel, alpha prime reverses to gamma during heating up to 923 K by a martensitic shear transformation. The gamma structure contains high density of dislocations and traces of alpha prime block which was induced by cold rolling. During annealing at 923 K, the reversed gamma is refined to 0. 5 mu m in grain size by a recovery process. (2) for 18-9 steel, alpha prime reverses to gamma during annealing at 923 K by a diffusional nucleation-growth process. (3) The reversion process of alpha prime to gamma is greatly dependent on the composition of steels and annealing temperature.

AB - The reversion process of martensite ( alpha prime ) to austenite ( gamma ) was investigated using 15. 62 percent Cr-9. 83 percent Ni (16-10) and 17. 62 percent Cr-8. 78 percent Ni (18-9) steels with metastable austenitic structure by means of transmission electron microscopy and magnetic analysis. The used steels transform to lath alpha prime from gamma by 90 percent cold rolling, and reverse to gamma again by the following annealing at temperature above about 900 K. The reversion processes are greatly different in the two steels. The difference is clear for 923 K isothermal annealing after 90 percent cold rolling. The results are: (1) for 16-10 steel, alpha prime reverses to gamma during heating up to 923 K by a martensitic shear transformation. The gamma structure contains high density of dislocations and traces of alpha prime block which was induced by cold rolling. During annealing at 923 K, the reversed gamma is refined to 0. 5 mu m in grain size by a recovery process. (2) for 18-9 steel, alpha prime reverses to gamma during annealing at 923 K by a diffusional nucleation-growth process. (3) The reversion process of alpha prime to gamma is greatly dependent on the composition of steels and annealing temperature.

UR - http://www.scopus.com/inward/record.url?scp=0024063999&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024063999&partnerID=8YFLogxK

U2 - 10.2355/tetsutohagane1955.74.8_1649

DO - 10.2355/tetsutohagane1955.74.8_1649

M3 - Article

VL - 74

SP - 1649

EP - 1656

JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

SN - 0021-1575

IS - 8

ER -