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国外用热等静压工艺处理高温合金铸件,通过消除缺陷、改善组织和减少性能分散度后,可使铸件的高温低频疲劳改善3～10倍,持久寿命提高两倍,瞬时性能也得到改善。此外,用热等静压处理后的铸件还有可能减少拓扑密堆的有害相形成。由于热等静压具有高温、高压、各向均匀受压,及气氛可控制等特点,可解决用其他工艺加工而无效的材料成型问题。
Foreign hot isostatic pressing process of high temperature alloy castings, by eliminating defects, improve the organization and reduce the performance of the dispersion, the casting can be high-temperature low-frequency fatigue improved 3 to 10 times the life expectancy increased twice the instantaneous performance has also been improved. In addition, castings treated with hot isostatic pressing may also reduce the formation of densified topologically detrimental phases. As the hot isostatic pressing with high temperature, high pressure, the pressure is uniform, and the atmosphere can be controlled and other characteristics, to solve the processing of other materials and ineffective material forming problems.