Effect of Ti and Zr on Hot Shortness of Low-Mn Stainless Steels for Reactor Materials
Studies on the stainless steels for reactor materials-I
1962 Volume 48 Issue 6 Pages 782-787
Details
1962 Volume 48 Issue 6 Pages 782-787
The present investigation was undertaken to develop the low-Mn AISI type 347 stainless steel for nuclear reactor materials. The hot shorthness caused by lowering Mn content in. steel, and favorable effect of Ti or Zr addition on low-Mn alloys.
The experimental results obtained were as follows;
(1) Mn content in steel could be reduced to below 0·10% through careful selection of raw materials.
(2) The hot shortness was apt to occur when Mn content in steel was decreased to 0·60%. Addition of Ti or Zr over 0·10% presumably was effective against the hot shortness.
(3) It can be considered that the drop in hot ductility for low-Mn steels and the solving this problem by the addition of Ti or Zr might not only depend on the type of oxides and oxygen content, but also mainly on the morphology of sulphides.
