ALL libraries (COBIB.SI union bibliographic/catalogue database)
13.
New experimental technique for measuring strain and residual stresses at laser remelting process
Grum, Janez, 1946- ; Šturm, Roman, 1965-
Laser hardening by remelting thin surface layers is a very prospective hardening method for ferrous and non-ferrous alloys, which do not show a homogeneous microstructural state after having been ...heat-treated in a classical way. Consequently, the alloys concerned do not achieve the required hardness of the surface layer and do not provide the required wear resistance either. In laser remelting of a workpiece such remelting conditions should be ensured that a uniform thickness of the modified layer can be obtained in spite of several laser-beam passages across the workpiece surface. Because of a multiple laser-beam passage across the workpiece surface, the state of stress in the workpiece is changing and, consequently, an undesired strain may occur. Such a strain may result in greater consumption of the material, additional machining, for instance grinding, which may result, in turn, in a higher cost price of the article or increased number of machine parts rejected. The paper deals with strain changes of thin flat specimens of nodular cast 500-7 in the laser remelting process. In the process of gradual remelting of the surface layer, that is during its heating and cooling, volume changes of the specimen occur due to thermal and microstructural changes. For a better knowledge of volume changes in the thin surface layer of the sample, the latter were monitored by strain measurement at the lower side of the specimen during the remelting process and by residual-stress measurement in the thin surface layer after the remelting process. The results obtained confirmed that on the basis of knowing the strains occurring during the remelting process and of the residual stresses, the process can be successfully optimised.
It was not necessary to add the material to the shelf.
Bibliographic material was successfully added on shelf.
Adding bibliographical material on shelf was not successful.
Material is already on the shelf.
Permalink
URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year
Impact factor
Edition
Category
Classification
JCR
SNIP
JCR
SNIP
JCR
SNIP
JCR
SNIP
Select the library membership card:
DRS,
in which the journal is indexed
Database name
Field
Year
Links to authors' personal bibliographies
Links to information on researchers in the SICRIS system
Subject headings in COBISS General List of Subject Headings
Select pickup location
The material from the parent unit is free. If the material is delivered to the pickup location from another unit, the library may charge you for this service.
