| 摘要: |
| 粉末冶金修复再制造是新近发展的一种先进材料表面求原重构完型的工艺方法。采用此工艺方法，可以有效解决高温合金，尤其是难焊铸造高温合金叶片及部件的无损伤熔焊连接难题；还可以对叶片的大间隙缺陷如裂纹、孔洞、烧蚀区与磨蚀区等进行三维空间的近等强度的恢复与重建。与加拿大Ｌiburdi Powder Metallurgy(L–PM)工艺相比，作者所研发的高温合金叶片粉末冶金修复工艺（China Powder Metallurgy，C–PM）有显著特色。 |
| 关键词: 粉末冶金 高温合金 再制造 叶片 修复 |
| DOI： |
| 分类号: |
| 基金项目:国家973计划，北京自然科学基金，维修预研基金(9140A27030107OC85? |
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| Powder Metallurgy Repair & Remanufacturing of High Temperature Alloy Bucket |
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WANG Mao–cai, ZHANG Jie
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State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
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| Abstract: |
| Powder metallurgy repair–remanufacturing technique is a nearly developed advanced surface prototype–reconstruction and/or–recovered art. High temperature alloy, especially the cast alloy, is very difficult to be welded for their high heat–crack sensitivity, and then the bucket (e.g. blade and vane) made of the alloy, which is damaged during service, not able to be repaired with the high strength being near/equal to the bucket alloy. Using the Powder Metallurgy, many defects of three dimensions in the bucket, such as crack, void, firing–corrosion zone and wear–erosion area etc, can be restored or rebuilt without any damages to the substrate alloy. Compared with the Liburdi Powder Metallurgy (L–PM) of Canada, so called China Powder Metallurgy (C–PM) developed by authors shows distinguished features in bucket repair process. |
| Key words: powder metallurgy high temperature alloy remanufacture bucket repair |
