Influence of previous structure on laser surface hardening of AISI 1045 steel

被引：8

作者：

Lopez, V ^{[1
]}

Fernandez, B ^{[1
]}

Bello, JM ^{[1
]}

Ruiz, J ^{[1
]}

Zubiri, F ^{[1
]}

机构：

[1] CTR LASER,PAMPLONA,SPAIN

来源：

ISIJ INTERNATIONAL | 1995年 / 35卷 / 11期

关键词：

heat treatment; laser hardening; steel microstructure;

D O I：

10.2355/isijinternational.35.1394

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of laser surface hardening was studied in an AISI 1045 steel with different microstructures: ferrite and pearlite, or with carbides dispersed in the ferritic matrix produced by martensite tempering at 180, 450, 600 and 660 degrees C. The laser treatments were carried out working with a 10 x 10 mm square beam of uniform power density and 1.5, 2.5 and 5 kW output power. The scan rates permitted temperatures to range from those at the austenitization start to the melting point of the material. The depths of the zones of affected material were revealed by metallographic observation and Vickers hardness measurement. The results suggest that the initial structure of the steel has a considerable influence on laser surface hardening effect. The differences are manifested in the depths of the distinct heat affected zones and in the obtained microstructures.

引用

页码：1394 / 1399

页数：6

共 7 条

[1] THE TRANSFORMATION HARDENING OF STEEL SURFACES BY LASER-BEAMS .1. HYPO-EUTECTOID STEELS [J].