Study on the Weldability of Aluminum Nitride Bearing Steel (Report 1)
Effect of Heat Treatment on the Behavior of AlN and Mechanical Properties of Aluminum Nitride Bearing Steel
1966 Volume 35 Issue 10 Pages 1015-1024
Details
1966 Volume 35 Issue 10 Pages 1015-1024
Recently, aluminum nitride bearing steel (AIN bearing steel) is researched as a material which has good mechanical properties, in particular higher ductility at low temperature.
In this report, to clarify the weldability of the steel, the behavior of AIN under various conditions of heat treatment and mechanical properties of the steel affected by various thermal cycles are investigated.
The results of these investigations are summarized as follows:
(1) AIN is almost dissolved into matrix after solution treatment at 1350°C for 30 min.
(2) Grain growth of the AIN bearing low carbon steel is not observed up to 1100°C.
(3) Transition temperature of AIN bearing low carbon steel is lower than that of aluminum killed low carbon steel.
(4) AIN bearing low carbon steel has higher ductility and better impact property than aluminum killed low carbon steel after treatment with various thermal cycles (max. temp. 1150°C).
(5) AIN bearing low carbon steel has almost the same mechanical properties as aluminum killed low carbon steel after treatment with various thermal cycles (max. temp. 1350°C).
