Titanium and molybdenum content in supermartensitic stainless steel

被引：47
|
作者：
Rodrigues, C. A. D.
Lorenzo, P. L. D.
Sokolowski, A.
Barbosa, C. A.
Rollo, J. M. D. A.
机构：
[1] Univ Sao Paulo, Aeronaut Automobile & Mat Engn Dept, Engn Sch Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil
[2] Villares Met R&D Ctr, BR-13177900 Sumare, SP, Brazil
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 460卷
基金：
巴西圣保罗研究基金会;
关键词：
supermartentic stainless steels; titanium; transformations of phases; heat treatment; mechanical properties;
D O I：
10.1016/j.msea.2007.01.016
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The supermartensitic stainless steels (SMSS) must be developed considering a balance between strength and toughness that are achieved by controlling the chemical compositions and heat treatment. In this paper, the results of detailed investigations on 12.50 Cr-5.40 Ni-2.10 Mo-0.13 Ti SMSS composition were obtained after the SMSS was put in a vacuum furnace and subsequently hot rolled and heat-treated. A very fine microstructure of martensite matrix with nanometer size particles of titanium carbonitride (Ti(C, N)-70nm) was selected after quenching and tempering. Such microstructure reasonably showed an improved mechanical property values: 28 RC hardness, 804 MPa tensile strength, 764 MPa yield strength, 23.7% elongation and 256 J impact energy. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：149 / 152
页数：4
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