Process Signature for Laser Hardening

During many manufacturing processes for surface treatment of steel components heat will be exchanged between the environment and workpiece. The exchange commonly leads to temperature gradients within near area workpiece, which involve mechanical strains inside material. If corresponding stresses exceed locally yield strength material residual can remain after process. increase is high enough additionally phase transformation austenite occurs may lead further on due a fast cooling very hard martensite. This investigation focuses correlation concrete thermal loads such as resulting modifications changes stress, microstructure, hardness respectively. Within this consideration are causes called internal loads. correlations generated Process Signature. idea that Signatures provide possibility engineer workpiece layer its functional properties in knowledge-based way. contribution presents some Signature thermally dominated process with transformation: laser hardening. target quantities change stress state at position 1st zero-crossing curve. Based Finite Element simulations loadings during hardening considered. investigations identify considered maximal temperature, gradient, heating time important parameters