| 摘要 |
The invention relates to a method for manufacturing a component (10), especially for gas turbines and other thermo machinery, comprising the steps of:
Providing a data set defining said component (10) for being used in an additive manufacturing process;
manufacturing said component (10) by means of said additive manufacturing process according to said data set; and
subjecting said manufactured component (10) to a heat treatment (HT) in order to change the microstructure of said manufactured component (10). The properties of the component are improved in that:
at least two different component volumes (CA1-CA3) are defined within said component (10) prior to the manufacturing step;
at least two different process parameters (A, B) are chosen for said additive manufacturing process, which process parameters (A, B) result in different driving forces for a recrystallization and therefore a different recrystallization behavior in the material of said component (10); and
said additive manufacturing process is executed with one of said at least two process parameters (A, B) being used during manufacturing a first of said at least two component volumes (CA1-CA3), resulting in a first recrystallization behavior in said first component volume, and with the other of said at least two process parameters (A, B) being used during manufacturing a second of said at least two component volumes (CA1-CA7), resulting in a second recrystallization behavior different from said first recrystallization behavior, in said second component volume; and
said manufactured component (10, 10') is subjected to a heat treatment (HT), with a holding temperature (T_HT), wherein the holding temperature (T_HT) lies above a recrystallization temperature of at least one of said at least two component volumes. |
