| Cavitation erosion resistance and ratio of elastic deformation energy to total deformation energy for Ti_3Al and TiNiNb alloys |
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| 作者姓名： | 龙霓东 朱金华 |
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| 作者单位： | State Key Laboratory for Mechanical Behavior of Materials，State Key Laboratory for Mechanical Behavior of Materials，Xi′an Jiaotong University，Xi′an 710049，China，Xi′an Jiaotong University，Xi′an 710049，China，Engineering Institute，Air Force Engineering University，Xi′an 710038，China |
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| 基金项目： | 国家自然科学基金，the State Key Fundamental Research and Development Program of China |
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| 摘 要： | 1 INTRODUCTIONCavitationerosioniscausedbythegrowthandcollapseofvaporcavitiesorbubblesduetolocalpres surefluctuationinaliquid1] .Itisaseriousprobleminhigh speedcomponentsofhydraulicmachines .Al thoughagreatamountofworkonthecavitationphe nomenahasbeen published ,thecavitationerosionmechanismofmaterialsisstillnotunderstoodcom pletely .Itisgenerallybelieved2 ,3] thatmechanicalattackisadominantmechanismforcavitationero sion .Manyinvestigations4 6 ] attemptedtocorrelatethemechanicalproperti…
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Cavitation erosion resistance and ratio of elastic deformation energy to total deformation energy for Ti3Al and TiNiNb alloys |
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| LONG Ni dong ,ZHU Jin hua.Cavitation erosion resistance and ratio of elastic deformation energy to total deformation energy for Ti_3Al and TiNiNb alloys[J].Transactions of Nonferrous Metals Society of China,2004,14(1). |
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| Authors: | LONG Ni dong ZHU Jin hua |
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| Affiliation: | LONG Ni dong 1,2,ZHU Jin hua 1 |
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| Abstract: | The cavitation erosion of Ti-46Ni-9Nb alloy, Ti-24Al-15Nb-1Mo alloy and 0Cr13Ni5Mo stainless steel has been investigated in tap water by using rotating disc equipment. It is shown that Ti-24Al-15Nb-1Mo alloy has the highest cavitation erosion resistance among the three tested materials and Ti-46Ni-9Nb alloy is more resistant to cavitation erosion than 0Cr13Ni5Mo stainless steel. To simulate the effect of collapse of vapor cavities or bubbles,the Rockwell hardness tester was used to exert a load on the small area of the tested materials, and the elastic deformation energy and total deformation energy in indentation were determined. The experiment results show that there is a good correlation between cavitaton erosion resistance and the ratio of elastic deformation energy to total deformation energy in indentation for the three tested materials. The higher the ratio, the better the cavitation erosion resistance. |
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| Keywords: | energy cavitation erosion indentation Ti3Al TiNiNb |
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