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Microstructural Evolution of 316L Austenitic Stainless Steel with 2%TiB 2 Addition during the HP‐HT Sintering
Author(s) -
Sulima Iwona,
Ratuszek Wiktoria,
ZielińskaLipiec Anna,
Jaworska Lucyna
Publication year - 2017
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201700047
Subject(s) - materials science , sintering , microstructure , martensite , austenite , scanning electron microscope , metallurgy , transmission electron microscopy , phase (matter) , composite material , chemistry , organic chemistry , nanotechnology
In the present work, the 316L steel+2%TiB 2 powders are sintered after milling by High Pressure‐High Temperature (HP‐HT) process. Studies cover the effect of sintering parameters on the development of microstructure and properties. The microstructural evolution of 316L steel‐2TiB 2 composites is characterized by the techniques of X‐ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It is found that the structure of a mixture of the 316L steel+2%TiB 2 powders after milling and the structure of subsequent composites sintered by HP‐HT is composed of a two‐phase matrix including austenite ( γ ) and martensite ( α' ). The phase analysis and calculations of the martensite ( α' ) content have revealed the highest content of this constituent in the matrix of 316L steel+2% TiB 2 composites obtained by sintering at a temperature of 900 °C.