LIQUID PHASE SINTERING USING SUPER ALLOYS

Document Type : Original Article

Authors

Mechanical Engineering Department,A1-Azhar University,Cairo,Egypt.

Abstract

The outhors are working on a project sponsored by the supreme council of Universities to deal with the subject of duplex powder preform forgings. As a part of its relevant program, the effect on hardness and tensile strength of liquid phase sintering was investigated. For such a study, specimens in circular and rectangular cross sections were produced from EMP 4607 steel powders with the additions of some different brazing alloy powders with an amount of 3.5%. Similar specimens were also prepared from DT 4607 steel powder only. Brinell hardness values were measured for cylindrical specimens. Tensile tests were performed by making use of the specimens with rectangular cross sections. The effect on mechanical properties of both sintering time and liquid phase sintering was observed.The results obtained at this stage were discussed with the aid of micro-structures examination.