Method for removing prior particle boundary and hole defect of powder metallurgy high-temperature alloy
Patent Information
- Authority / Receiving Office
- US · United States
- Current Assignee / Owner
- CENT SOUTH UNIV
- Publication Date
- 2017-08-03
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
BACKGROUND
[0001] 1. Field of the Disclosure
[0002] The disclosure relates to a method for removing prior particle boundaries and hole defects of a powder metallurgy high-temperature alloy, and belongs to the powder metallurgy material field.
[0003] 2. Description of Related Art
[0004] Defects, such as prior particle boundaries (PPB), internal holes, or thermal induction holes of a powder metallurgy high-temperature alloy are main defects of a powder high-temperature alloy, and are difficult to be removed once formed, and severely reduce mechanical properties of an alloy.
[0005] With respect to the defect of prior particle boundaries of the powder metallurgy high-temperature alloy, Chinese patent CN102409276A discloses a method for removing prior particle boundaries of a powder metallurgy high-temperature alloy, comprising: performing high-temperature solution treatment on a powder metallurgy high-temperature alloy after direct hot isostatic pressing at a high-temperature solution treatment t...