TEMPERING OF STEEL DURING LASER TREATMENT

被引：22

作者：

HEGGE, HJ ^{[1
]}

DEBEURS, H ^{[1
]}

NOORDHUIS, J ^{[1
]}

DEHOSSON, JTM ^{[1
]}

机构：

[1] STATE UNIV GRONINGEN,CTR MAT SCI,DEPT APPL PHYS,9747 AG GRONINGEN,NETHERLANDS

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1990年 / 21卷 / 04期

关键词：

D O I：

10.1007/BF02656583

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study concentrates on the annealing effects of a laser-treated area by a successive laser pass in a plain carbon, a chromium, and a tungsten steel. Transmission electron microscopy (TEM), optical microscopy (OM), and wear and hardness measurements revealed substantial effects on the properties and microstructure of the plain carbon and tungsten steel which have a partly martensitic cellular structure after the first laser treatment. Close to the melt zone, martensite was again formed, whereas further away, nucleation of carbides was observed. The hardness increased in the former area and decreased in the latter. An analytical model sustained that the softening is due to carbon diffusion and martensite tempering. The softer zone in the tungsten steel exhibited a decrease of wear rate relative to the not-annealed zone in contrast to the plain carbon steel. Besides some diffusion, no annealing effects were found in the chromium steel which possessed an austenitic cellular structure after the first laser treatment. © 1990 The Metallurgical of Society of AIME.

引用

页码：987 / 995

页数：9

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