Title:
METHOD FOR POST-BUILT HEAT TREATMENT OF ADDITIVELY MANUFACTURED COMPONENTS MADE OF GAMMA-PRIME STRENGTHENED SUPERALLOYS
Document Type and Number:
Japanese Patent JP2015227505
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an efficient method for heat treatment of components built up by SLM.SOLUTION: The method comprises a) providing an additively manufactured component in an as-built condition, b) heating the component from room temperature (RT) up to a temperature T, where Tis 50 to 100°C less than a temperature T, at which a drop of the coefficient of thermal expansion starts, c) holding the component for a time tat Tto achieve a uniform component temperature, d) heating the component by applying a fast heating with a heating rate vof at least 25°C/min from Tto a temperature Tequal to or less than 850°C to avoid or at least to reduce precipitation of the gamma-prime phase, and e) applying further time/temperature steps to the component depending on the purpose of the heat treatment.
Inventors:
ETTER THOMAS
ROMAN ENGELI
KUENZLER ANDREAS
ROMAN ENGELI
KUENZLER ANDREAS
Application Number:
JP2015097096A
Publication Date:
December 17, 2015
Filing Date:
May 12, 2015
Export Citation:
Assignee:
ALSTOM TECHNOLOGY LTD
International Classes:
C22F1/10; B22F3/15; B22F3/24; B33Y10/00
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Takuya Kuno