Size change due to anisotropic dilation behaviour of a low alloy SAE 5120 steel

被引：17

作者：

Hunkel, Martin ^{[1
]}

Frerichs, Friedhelm ^{[1
]}

Prinz, Christian ^{[1
]}

Surm, Holger ^{[1
]}

Hoffmann, Franz ^{[1
]}

Zoch, Hans-Werner ^{[1
]}

机构：

[1] IWT Stiftung Inst Werkstofftech, Hauptabt Werkstofftech, D-28359 Bremen, Germany

来源：

STEEL RESEARCH INTERNATIONAL | 2007年 / 78卷 / 01期

关键词：

SAE; 5210; banded structure; transformation; size change;

D O I：

10.1002/srin.200705858

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A conventional hot rolled, low alloy carburizing steel (C: 0.21 wt.-%; Cr: 1.08 wt.%; Mn: 1.36 wt.%) has been investigated in terms of inhomogeneous phase transformations and anisotropic size changes during heating to austenitizing temperature and during slow cooling from austenitizing temperature to room temperature. A detailed study was executed on dilatometer specimens. The results were compared with the size changes of shafts with similar heat treatment. Ferrite nucleated first at selected chain-like positions and a pronounced ferrite/pearlite rodlike structure was formed. After reaustenitizing the rodlike structure appeared exactly at the same position. At intermediate transformation stages broad regions were still untransformed while other regions had an advanced transformation state. Dilatometer specimens with different orientations to the former rolling direction of the bar had different changes in length, which indicates an anisotropic size change. Cylindrical shafts showed a similar macroscopic size change like the small dilatometer specimens. For the dilatometer specimens as well as for the shafts the absolute valuese of the size change depended on the initial microstructure.

引用

页码：45 / 51

页数：7

共 14 条

[1]

Bastien P.G., 1957, J IRON STEEL I, V187, P281

[2]

Brooks CR., 1992, Principles of the austenitization of steels

[3] FORMATION OF PEARLITIC BANDED STRUCTURES IN FERRITIC-PEARLITIC STEELS [J].

GROSSTERLINDEN, R ;

KAWALLA, R ;

LOTTER, U ;

PIRCHER, H .

STEEL RESEARCH, 1992, 63 (08) :331-336

[4]

HOFFMANN F, 2004, HEAT TREATMENT METAL, V2, P27

[5] Dimensional anisotropy during phase transformations in a chemically banded 5140 steel. Part I: experimental investigation [J].

Jaramillo, RA ;

Lusk, MT ;

Mataya, MC .

ACTA MATERIALIA, 2004, 52 (04) :851-858

[6]

Kirkaldy JS., 1962, CAN METALL Q, V1, P59, DOI [10.1179/cmq.1962.1.1.59, DOI 10.1179/CMQ.1962.1.1.59]

[7]

KIRKALDY JS, 1963, CAN METALL QUART, V2, P233

[8] Anisotropic dilatation behaviour during transformation of hot rolled steels showing banded structure [J].

Kop, TA ;

Sietsma, J ;

van der Zwaag, S .

MATERIALS SCIENCE AND TECHNOLOGY, 2001, 17 (12) :1569-1574

[9] Development of microstructural banding in low-alloy steel with simulated Mn segregation [J].

Majka, TF ;

Matlock, DK ;

Krauss, G .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2002, 33 (06) :1627-1637

[10] Ferrite/pearlite band formation in hot rolled medium carbon steel [J].

Offerman, SE ;

van Dijk, NH ;

Rekveldt, MT ;

Sietsma, J ;

van der Zwaag, S .

MATERIALS SCIENCE AND TECHNOLOGY, 2002, 18 (03) :297-303

← 1 2 →