Sintering of PM-Steels with C-Masteralloy Addition
The introduction of carbon in PM-steels by the masteralloy route is an interesting alternative to the use of graphite.High pressure water atomization opens the possibility to produce Fe-C masteralloys in the desired size and shape.It has been shown that the use of this masteralloy allows to reach comparable or even better mechanical properties than the standard procedure.This investigation focuses on the sintering process of the material as the deoxidation behavior differs significantly by the use of C-masteralloy instead of graphite.Thermal analysis techniques(dilatometry,coupled with mass spectroscopy)were used to describe the sintering behavior of the material.It is shown that the reactivity of cementite is higher compared to the admixed graphite,which enhances carbon dissolution during sintering.The influence of the green density was investigated by extreme high density material(pressed with 1200 MPa).The results show that the deoxidation behavior of the high density material is not as much different from standard density grades as might be expected.
Ferrous powders Master alloy Carbon dissolution Sintering Oxygen Reduction Thermal analysis
Gierl-Mayer Christian Jetzinger Magdalena Dunkley John Danninger Herbert
Institut für Chemische Technologien und Analytik,Technische Universit(a)t Wien,A-1060 Wien/Vienna,Au Atomising Systems Ltd.371 Coleford Road,Sheffield,S9 5NF,England
国际会议
北京
英文
413-420
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）