Patent ID: 8808474
Filing Date: 2014-08-19
Classification: C21D,C22B

Abstract:
1. A method of fabricating a stainless martensitic steel, comprising: an electroslag remelting of an ingot of steel; a first cooling of the ingot, wherein before a minimum temperature of the ingot falls below a martensitic transformation start temperature, either subjecting the ingot to at least one austenitic thermal cycle comprising heating the ingot above an austenitic temperature of the ingot and a second cooling step of cooling the ingot, wherein for the second cooling step: when the second cooling step is not followed by another austenitic thermal cycle, the method further comprises a second holding wherein the ingot is held at the holding temperature included for the hold time, the second holding being carried out as soon as the temperature of the coolest point of the ingot has reached the holding temperature; when the second cooling step is followed by another austenitic thermal cycle, before a minimum temperature of the ingot falls below the martensitic transformation start temperature, the method further comprises