Phase and microstructural study of surface layers produced by plasma immersion ion implantation of stainless steel X6CrNiTi1810

Citation
C. Blawert et al., Phase and microstructural study of surface layers produced by plasma immersion ion implantation of stainless steel X6CrNiTi1810, SURF ENG, 15(6), 1999, pp. 469-475
Citations number
23
Categorie Soggetti
Material Science & Engineering
Journal title
SURFACE ENGINEERING
ISSN journal
02670844 → ACNP
Volume
15
Issue
6
Year of publication
1999
Pages
469 - 475
Database
ISI
SICI code
0267-0844(1999)15:6<469:PAMSOS>2.0.ZU;2-0
Abstract
A complex study of austenitic stainless steel X6CrNiTi1810 modified by, nit rogen plasma immersion ion implantation (PI3) at 300 and 400 degrees C is p resented. To obtain detailed information on the structure and phase composi tions, conversion electron Mossbauer spectroscopy: XRD, TEM and Rutherford backscattering spectroscopy ale applied. Depending on the treatment tempera ture a mixture of several phases is observed by Mossbauer phase analysis an d confirmed by TEM. The dominant component in specimens treated at 300 degr ees C is a paramagnetic oversaturated austenitic phase. A higher implantati on temperature (400 degrees C) evokes more pronounced diffusion of nitrogen into the specimen volume?, causing a decrease of nitrogen concentration bu t an increase of stress in the surface layer. This influences the defect de nsity, and results in a change of the expanded austenitic phase. Nitride fo rmation is also different depending on the temperature. Furthermore,lore, a texturing of the grains is observed after the PI3 treatment at both temper atures. (C) 1999 IoM Communications Ltd.