The appearance of magnesium and its effect on the mechanical properties ofInconel 718 with low sulfur content

Authors
Liu, XB Dong, JX Xie, XS Chang, KM
Citation
Xb. Liu et al., The appearance of magnesium and its effect on the mechanical properties ofInconel 718 with low sulfur content, MAT SCI E A, 303(1-2), 2001, pp. 262-266
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
303
Issue
1-2
Year of publication
2001
Pages
262 - 266
Database
ISI
SICI code
0921-5093(20010515)303:1-2<262:TAOMAI>2.0.ZU;2-Q
Abstract
The appearance of magnesium and its effect on the mechanical properties of Inconel 718 with low sulfur content were investigated. The results show tha t magnesium has almost no effect on the tensile properties of Inconel 718 a t room temperature, 500 degreesC and 650 degreesC. When the content of sulf ur is lower than 10 ppm, magnesium can decrease the stress rupture life of Inconel 718 at 650 degreesC, 686 MPa. The fractography and microstructure a nalysis by means of scanning electron microscopy (SEM) reveal that magnesiu m has little effect on the rupture method and microstructure of Inconel 718 , i.e. grain size and delta -phase, etc. The Auger research shows that ther e is no segregation of magnesium at grain boundaries. The main appearance m ethod of magnesium is Mg(O,S). (C) 2001 Elsevier Science B.V. All rights re served.