IMPROVEMENT OF CRYOGENIC MECHANICAL-PROPERTIES OF FE-12 MN AND FE-8 MN ALLOY-STEELS THROUGH THERMAL-MECHANICAL TREATMENTS

被引:34
作者
HWANG, SK
MORRIS, JW
机构
[1] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720
[2] UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720
来源
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1979年 / 10卷 / 05期
关键词
D O I
10.1007/BF02658317
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An investigation has been made to improve the low temperature mechanical properties of Fe-8Mn and Fe-12Mn-0.2 Ti alloy steels. A reversion annealing heat treatment in the two-phase (α+ γ) region following cold working has been identified as an effective treatment. In an Fe-12Mn-0.2Ti alloy a promising combination of low temperature (-196°C) fracture toughness and yield strength was obtained by this method. The improvement of properties was attributed to the refinement of grain size and to the introduction of a uniform distribution of retained austenite (γ). It was also shown that an Fe-8Mn steel could be grain-refined by a purely thermal treatment because of its dislocated α martensitic structure and absence of ε martensite. As a result, a significant reduction of ductile to brittle transition temperature was obtained. © 1979 American Society for Metals and the Metallurgical Society of AIME.
引用
收藏
页码:545 / 555
页数:11
相关论文
共 27 条
[1]  
[Anonymous], 1964, T ASM
[2]   INCREASED FRACTURE TOUGHNESS IN A 300 GRADE MARAGING-STEEL AS A RESULT OF THERMAL CYCLING [J].
ANTOLOVICH, SD ;
SAXENA, A ;
CHANANI, GR .
METALLURGICAL TRANSACTIONS, 1974, 5 (03) :623-632
[3]   MECHANICAL PROPERTIES OF ALPHA-PHASE LOW-CARBON FE-MN ALLOYS [J].
BOLTON, JD ;
PETTY, ER ;
ALLEN, GB .
METALLURGICAL TRANSACTIONS, 1971, 2 (10) :2915-&
[4]   A TRANSITIONAL HCP PHASE IN THE GAMMA-]ALPHA-TRANSFORMATION IN CERTAIN FE-BASE ALLOYS [J].
CINA, B .
ACTA METALLURGICA, 1958, 6 (12) :748-762
[5]  
GOLDBERG A, 1968, T ASM, V61, P26
[6]   STABILITY OF REVERTED AUSTENITE IN 6 PERCENT NICKEL STEEL [J].
HAGA, H .
TRANSACTIONS OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1973, 13 (02) :141-144
[7]  
HANSEN M, 1958, CONSTITUTION BINARY, P644
[8]  
HOLDEN A, 1971, J IRON STEEL I, V209, P721
[9]   STUDY OF RETAINED AUSTENITE IN A FINE-GRAINED FE-12NI-O.25TI ALLOY [J].
HWANG, SK ;
JIN, S ;
MORRIS, JW .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1975, 6 (11) :2015-2021
[10]   COMPARATIVE FRACTURE TOUGHNESS OF AN ULTRAFINE GRAINED FE-NI ALLOY AT LIQUID-HELIUM TEMPERATURE [J].
JIN, S ;
HWANG, SK ;
MORRIS, JW .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1975, 6 (08) :1569-1575