Estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction test
Cold forming has required considerably superior hard coating on a die to manufacture net-shaped products. Especially, under poor lubrication conditions or a dry condition, the hard coating is indispensable for the success of manufacturing. Accordingly, the die has required the superior hard coating...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2023-06-01
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| Series: | Mechanical Engineering Journal |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/mej/10/4/10_23-00072/_pdf/-char/en |
| _version_ | 1828718021401640960 |
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| author | Kazuhito ASAI Kazuhiko KITAMURA Chikara MATSUDA Takuma ISE |
| author_facet | Kazuhito ASAI Kazuhiko KITAMURA Chikara MATSUDA Takuma ISE |
| author_sort | Kazuhito ASAI |
| collection | DOAJ |
| description | Cold forming has required considerably superior hard coating on a die to manufacture net-shaped products. Especially, under poor lubrication conditions or a dry condition, the hard coating is indispensable for the success of manufacturing. Accordingly, the die has required the superior hard coating to prevent adhesion, reduce friction, and control wear. Recently, it has been also necessary to improve die life and product qualities under severe tribological conditions. However, the comprehension of damage such as cracking, flaking, and galling is insufficient for metal forming. This study focuses on initiation and growth of cracking in the hard coating. Assuming the hard coating is subjected to tensile stress, nominal stress, or frictional shear stress, the performances of typical four hard coatings are investigated by two tests. One is a uniaxial tensile test, and another is a rotating cross-cylinders wear and friction test. These tests are applied to estimate the mechanical performance of hard coatings: CrN, TiN, VC, and CrAlN. After the two test and analyses with detail observation, the CrAlN coating collectively exhibits the highest anti-cracking property of the tested four hard coatings. |
| first_indexed | 2024-03-12T14:37:47Z |
| format | Article |
| id | doaj.art-08e889520d974cec96d0fe97d9362cf2 |
| institution | Directory Open Access Journal |
| issn | 2187-9745 |
| language | English |
| last_indexed | 2024-03-12T14:37:47Z |
| publishDate | 2023-06-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Mechanical Engineering Journal |
| spelling | doaj.art-08e889520d974cec96d0fe97d9362cf22023-08-17T02:40:07ZengThe Japan Society of Mechanical EngineersMechanical Engineering Journal2187-97452023-06-0110423-0007223-0007210.1299/mej.23-00072mejEstimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction testKazuhito ASAI0Kazuhiko KITAMURA1Chikara MATSUDA2Takuma ISE3National Institute of Technology, Toyota CollegeNagoya Institute of TechnologyYUKEN INDUSTRY CO., LTD.YUKEN INDUSTRY CO., LTD.Cold forming has required considerably superior hard coating on a die to manufacture net-shaped products. Especially, under poor lubrication conditions or a dry condition, the hard coating is indispensable for the success of manufacturing. Accordingly, the die has required the superior hard coating to prevent adhesion, reduce friction, and control wear. Recently, it has been also necessary to improve die life and product qualities under severe tribological conditions. However, the comprehension of damage such as cracking, flaking, and galling is insufficient for metal forming. This study focuses on initiation and growth of cracking in the hard coating. Assuming the hard coating is subjected to tensile stress, nominal stress, or frictional shear stress, the performances of typical four hard coatings are investigated by two tests. One is a uniaxial tensile test, and another is a rotating cross-cylinders wear and friction test. These tests are applied to estimate the mechanical performance of hard coatings: CrN, TiN, VC, and CrAlN. After the two test and analyses with detail observation, the CrAlN coating collectively exhibits the highest anti-cracking property of the tested four hard coatings.https://www.jstage.jst.go.jp/article/mej/10/4/10_23-00072/_pdf/-char/encold forminghard coatingwearcrackstrain |
| spellingShingle | Kazuhito ASAI Kazuhiko KITAMURA Chikara MATSUDA Takuma ISE Estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction test Mechanical Engineering Journal cold forming hard coating wear crack strain |
| title | Estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction test |
| title_full | Estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction test |
| title_fullStr | Estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction test |
| title_full_unstemmed | Estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction test |
| title_short | Estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross-cylinders wear/friction test |
| title_sort | estimation of crack initiation and growth of hard coating by uniaxial tensile test and rotating cross cylinders wear friction test |
| topic | cold forming hard coating wear crack strain |
| url | https://www.jstage.jst.go.jp/article/mej/10/4/10_23-00072/_pdf/-char/en |
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