CN103952595A - 一种用于修复定向凝固镍基高温合金叶片的激光熔覆粉末 - Google Patents
一种用于修复定向凝固镍基高温合金叶片的激光熔覆粉末 Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 31
- 238000004372 laser cladding Methods 0.000 title claims abstract description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 18
- 239000000956 alloy Substances 0.000 title claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 6
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052796 boron Inorganic materials 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 239000011651 chromium Substances 0.000 claims abstract description 5
- 239000010941 cobalt Substances 0.000 claims abstract description 5
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 5
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 239000011733 molybdenum Substances 0.000 claims abstract description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 5
- 239000010937 tungsten Substances 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- -1 surplus Chemical compound 0.000 claims description 2
- 229910052729 chemical element Inorganic materials 0.000 abstract 1
- 238000005253 cladding Methods 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000009689 gas atomisation Methods 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
本发明提供了一种用于修复定向凝固镍基高温合金叶片的激光熔覆粉末,按重量百分比由以下化学成分组成:镍,余量,铬15.0~16.0%,钴10.0~13.0%,碳0.1~0.2%,钼2.0~2.3%,钨3.5~3.7%,铝6.5~7.0%,钽6.5~7.0%,镐0.1~0.3%,硼0.1~0.3%,铼2.0~3.0%,铪1.0~1.5%,余量为镍。
Description
技术领域
本发明涉及一种定向凝固镍基高温合金叶片叶尖修复的激光熔覆粉末,属于航空发动维修工程领域。
背景技术
某型航空发动机高压涡轮工作叶片采用镍基高温温合金DZ125定向凝固结晶精密铸造而成。一个大修周期后高压涡轮工作叶片在工作中叶尖出现裂纹和磨损等故障而报废,必须对叶尖进行修复才能重新使用。DZ125为高铝、钛高温合金,可焊性差,采用常规的氩弧焊在接长叶尖时容易产生裂纹,且无法产生定向凝固组织,因此国内外目前主要采用激光熔覆技术来修复叶尖裂纹和磨损部位,但是如何选择一种合适的熔覆粉末是关键,研究分析表明航空发动机定向凝固镍基高温合金叶片叶尖出现磨损和裂纹故障主要是因为封严涂层NiCrAlY硬度较高和基材抗燃气腐蚀差等原因加剧了磨损和裂纹出现,因此本专利提供发明了一种新型的镍基合金熔覆粉末,该粉末材料具有比DZ125合金更高的高温强度、抗氧化和抗腐蚀性能,用该粉末修复的高压涡轮工作叶片能满足航空发动机360小时的使用寿命要求。
国内外公开了多种激光熔覆粉末,但是这些粉末不具备抗900℃以上的热腐蚀的要求,且与定向凝固镍基高温温合金DZ125之间存在热膨胀系数差异>5%,不能满足DZ125定向凝固结晶精密铸造叶片修复技术要求。本发明提供的用于修复定向凝固镍基高温合金叶片的激光熔覆粉末抗热腐蚀性能优良,且与定向凝固镍基高温温合金DZ125之间存在热膨胀系数差异<5%。
发明内容
本发明提供了一种用于修复定向凝固镍基高温合金叶片的激光熔覆粉末,按重量百分比由以下化学成分组成:镍,余量,铬15.0~16.0%,钴10.0~13.0%,碳0.1~0.2%,钼2.0~2.3%,钨3.5~3.7%,铝6.5~7.0%,钽6.5~7.0%,镐0.1~0.3%,硼0.1~0.3%,铼2.0~3.0%,铪1.0~1.5%,余量为镍;
为便于粉末在激光熔覆过程中的充分熔融,提高激光熔覆层与基体材料的结合力,本发明提供的激光熔覆粉末优选粒度为-170~+325目的球形粉末。
为控更好的制熔覆层的热膨胀系数,本发明提供的激光熔覆粉末优选其他杂质元素单个元素含量不大于0.05%,其他杂质元素总和不超过0.1%。
在本发明提供的激光熔覆粉末中,由于加入了高含量的铝、钽、铼等元素,使用该激光熔覆粉末得到的熔覆层抗腐蚀性能优于DZ125合金,该熔覆层在900 ℃保温100 h的热腐蚀试验中,其增重量为4.0 mg/cm2,而相同条件下DZ125合金的增重量为9.0 mg/cm2,同时该熔覆层的热膨胀系数与DZ125合金叶片材料的热膨胀系数之差小于5%,熔覆层界面无脆性相生成。
具体实施例
实施例1 ,某型航空发动机高压涡轮工作叶片材料为定向凝固镍基高温合金DZ125,用500W功率的激光器进行熔覆修复,粉末采用氩气雾化制备,粉末形貌为球形,粉末的化学成分(重量百分比):镍:余量,铬:15.0%,钴:12.0%,碳:0.15%,钼:2.1%,钨:3.6%,铝:6.8%,钽:6.7%,镐:0.2%,硼:0.2%,铼:2.5%,铪:1.2%。其他杂质元素为Fe元素,它的含量为0.04%。经过激光熔覆修复后进行力学性能测试,950℃的高温拉伸强度达到800 MPa,修复的叶片经荧光和X光检查无裂纹显示,修复的高压涡轮工作叶片经使用一个发动机寿命,叶尖无掉块等现象发生。
实施例2,某型航空发动机高压涡轮工作叶片材料为定向凝固镍基高温合金DZ125,采用该粉末用500W功率的激光器进行熔覆修复,粉末采用氩气雾化制备,粉末形貌为球形,粉末的化学成分(重量百分比):镍:余量,铬:15.0%,钴:12.5%,碳:0.15%,钼:2.1%,钨:3.6%,铝:6.9%,钽:6.7%,镐:0.2%,硼:0.2%,铼:2.4%,铪:1.3%。其他杂质元素为Fe元素,它的含量为0.03%。经过激光熔覆修复后进行力学性能测试,950℃的高温拉伸强度达到820 MPa,修复的叶片经荧光和X光检查无裂纹显示,修复的高压涡轮工作叶片经使用一个发动机寿命,叶尖无掉块等现象发生。
Claims (3)
1.一种用于修复定向凝固镍基高温合金叶片的激光熔覆粉末,其特征在于所述激光熔覆粉末按重量百分比由以下化学成分组成:镍,余量,铬15.0~16.0%,钴10.0~13.0%,碳0.1~0.2%,钼2.0~2.3%,钨3.5~3.7%,铝6.5~7.0%,钽6.5~7.0%,镐0.1~0.3%,硼0.1~0.3%,铼2.0~3.0%,铪1.0~1.5%,余量为镍。
2.根据权利要求1所述的激光熔覆粉末,其特征在于,其他杂质元素单个元素含量不大于0.05%,其他杂质元素总和不超过0.1%。
3.根据权利要求1或2所述的激光熔覆粉末,其特征在于,激光熔覆粉末是粒度为-170~+325目的球形粉末。
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Cited By (4)
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CN106591826A (zh) * | 2016-10-27 | 2017-04-26 | 中国人民解放军第五七九工厂 | 一种用于修复涡轮叶片叶尖裂纹的修复材料及其修复方法 |
CN109536950A (zh) * | 2018-12-12 | 2019-03-29 | 江苏大学 | 一种通过激光熔覆处理提高铝合金热疲劳性能的复合粉末 |
CN110303163A (zh) * | 2019-05-23 | 2019-10-08 | 中国人民解放军第五七一九工厂 | 一种高强高抗裂性激光增材修复用复合粉末及制备方法 |
CN112427637A (zh) * | 2020-11-20 | 2021-03-02 | 中国人民解放军第五七一九工厂 | 定向凝固晶涡轮叶片叶尖深裂纹的修复材料及修复方法 |
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CN106591826A (zh) * | 2016-10-27 | 2017-04-26 | 中国人民解放军第五七九工厂 | 一种用于修复涡轮叶片叶尖裂纹的修复材料及其修复方法 |
CN106591826B (zh) * | 2016-10-27 | 2019-11-05 | 中国人民解放军第五七一九工厂 | 一种用于修复涡轮叶片叶尖裂纹的修复材料及其修复方法 |
CN109536950A (zh) * | 2018-12-12 | 2019-03-29 | 江苏大学 | 一种通过激光熔覆处理提高铝合金热疲劳性能的复合粉末 |
CN110303163A (zh) * | 2019-05-23 | 2019-10-08 | 中国人民解放军第五七一九工厂 | 一种高强高抗裂性激光增材修复用复合粉末及制备方法 |
CN110303163B (zh) * | 2019-05-23 | 2022-03-11 | 中国人民解放军第五七一九工厂 | 一种高强高抗裂性激光增材修复用复合粉末及制备方法 |
CN112427637A (zh) * | 2020-11-20 | 2021-03-02 | 中国人民解放军第五七一九工厂 | 定向凝固晶涡轮叶片叶尖深裂纹的修复材料及修复方法 |
CN112427637B (zh) * | 2020-11-20 | 2023-01-20 | 中国人民解放军第五七一九工厂 | 定向凝固晶涡轮叶片叶尖深裂纹的修复材料及修复方法 |
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