EFFECT OF SURFACE ROUGHNESS ON FATIGUE PROPERTY OF TC4 TITANIUM ALLOY BY SELECTIVE LASER MELTING
The fatigue characteristic of TC4 titanium alloy by selective laser melting（ SLM） with two different surface roughness is investigated. The detail fatigue rating（ DFR） values are achieved based on the fatigue tests. The fatigue fractography is observed by scanning electron microscope to find the rea...
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Editorial Office of Journal of Mechanical Strength
2020-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.05.012 |
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| author | DONG DengKe CHEN An LI XiaoFei ZHANG HaiYing |
| author_facet | DONG DengKe CHEN An LI XiaoFei ZHANG HaiYing |
| author_sort | DONG DengKe |
| collection | DOAJ |
| description | The fatigue characteristic of TC4 titanium alloy by selective laser melting（ SLM） with two different surface roughness is investigated. The detail fatigue rating（ DFR） values are achieved based on the fatigue tests. The fatigue fractography is observed by scanning electron microscope to find the reason for surface roughness modification. The results indicate that DFR value of as-built surface specimen is 235. 1 MPa and machined surface specimen is 283. 3 MPa. So the SLM TC4 specimen in machined surface has superior fatigue property. The surface roughness has a significant effect on the crack initiation site. The fatigue crack in as-built specimen initiates from surface. Fatigue crack in machined specimen initiates from inside to subsurface.The latter is flat and the former is relatively rough. |
| format | Article |
| id | doaj-art-530e8d7965bf4547831c5f249ec7582b |
| institution | DOAJ |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-530e8d7965bf4547831c5f249ec7582b2025-08-20T02:41:57ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692020-01-01421094109830608823EFFECT OF SURFACE ROUGHNESS ON FATIGUE PROPERTY OF TC4 TITANIUM ALLOY BY SELECTIVE LASER MELTINGDONG DengKeCHEN AnLI XiaoFeiZHANG HaiYingThe fatigue characteristic of TC4 titanium alloy by selective laser melting（ SLM） with two different surface roughness is investigated. The detail fatigue rating（ DFR） values are achieved based on the fatigue tests. The fatigue fractography is observed by scanning electron microscope to find the reason for surface roughness modification. The results indicate that DFR value of as-built surface specimen is 235. 1 MPa and machined surface specimen is 283. 3 MPa. So the SLM TC4 specimen in machined surface has superior fatigue property. The surface roughness has a significant effect on the crack initiation site. The fatigue crack in as-built specimen initiates from surface. Fatigue crack in machined specimen initiates from inside to subsurface.The latter is flat and the former is relatively rough.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.05.012Selective laser meltingSurface roughnessDetail Fatigue Rating（DFR）Fatigue fractography |
| spellingShingle | DONG DengKe CHEN An LI XiaoFei ZHANG HaiYing EFFECT OF SURFACE ROUGHNESS ON FATIGUE PROPERTY OF TC4 TITANIUM ALLOY BY SELECTIVE LASER MELTING Jixie qiangdu Selective laser melting Surface roughness Detail Fatigue Rating（DFR） Fatigue fractography |
| title | EFFECT OF SURFACE ROUGHNESS ON FATIGUE PROPERTY OF TC4 TITANIUM ALLOY BY SELECTIVE LASER MELTING |
| title_full | EFFECT OF SURFACE ROUGHNESS ON FATIGUE PROPERTY OF TC4 TITANIUM ALLOY BY SELECTIVE LASER MELTING |
| title_fullStr | EFFECT OF SURFACE ROUGHNESS ON FATIGUE PROPERTY OF TC4 TITANIUM ALLOY BY SELECTIVE LASER MELTING |
| title_full_unstemmed | EFFECT OF SURFACE ROUGHNESS ON FATIGUE PROPERTY OF TC4 TITANIUM ALLOY BY SELECTIVE LASER MELTING |
| title_short | EFFECT OF SURFACE ROUGHNESS ON FATIGUE PROPERTY OF TC4 TITANIUM ALLOY BY SELECTIVE LASER MELTING |
| title_sort | effect of surface roughness on fatigue property of tc4 titanium alloy by selective laser melting |
| topic | Selective laser melting Surface roughness Detail Fatigue Rating（DFR） Fatigue fractography |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.05.012 |
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