Study on the Densification Mechanism of Ti-6Al-4V Powder during High Velocity Compaction Based on the Evolution of Microscale Pores
The high velocity compaction process of Ti-6Al-4V powder is simulated by using two-dimensional multi-particle finite element method. The morphological features of pores among particles are quantitatively characterized. The change laws regarding the morphology and area filling of various typical pore...
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| Veröffentlicht in: | Ji xie gong cheng xue bao 2024-01, Vol.60 (16), p.180 |
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| creator | Zhou, Jian Xu, Hongkun Liu, Kun |
| description | The high velocity compaction process of Ti-6Al-4V powder is simulated by using two-dimensional multi-particle finite element method. The morphological features of pores among particles are quantitatively characterized. The change laws regarding the morphology and area filling of various typical pores during the compaction process are analyzed in detail. The powder densification mechanism is studied from the aspect of the evolution of microscale pores. The simulation results show that when the compaction pressure is lower than a critical value（about 1 500 MPa）, pores are mainly filled by particle rearrangement and plastic deformation, so that the slope of the density-pressure curve is steep, and the green powder assembly is easily densified. Above that critical pressure,the slope of the density-pressure curve gradually decreases, and powder densification becomes difficult. Microscopically, at the stage of particle rearrangement and plastic deformation, there are many quadrilateral pores with large area-ratios |
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The morphological features of pores among particles are quantitatively characterized. The change laws regarding the morphology and area filling of various typical pores during the compaction process are analyzed in detail. The powder densification mechanism is studied from the aspect of the evolution of microscale pores. The simulation results show that when the compaction pressure is lower than a critical value（about 1 500 MPa）, pores are mainly filled by particle rearrangement and plastic deformation, so that the slope of the density-pressure curve is steep, and the green powder assembly is easily densified. Above that critical pressure,the slope of the density-pressure curve gradually decreases, and powder densification becomes difficult. Microscopically, at the stage of particle rearrangement and plastic deformation, there are many quadrilateral pores with large area-ratios</description><identifier>ISSN: 0577-6686</identifier><language>chi</language><publisher>Beijing: Chinese Mechanical Engineering Society (CMES)</publisher><subject>Constitutive equations ; Constitutive relationships ; Critical pressure ; Densification ; Density ; Evolution ; Filling ; Finite element method ; Morphology ; Plastic deformation ; Polygons ; Pressure curve ; Quadrilaterals ; Titanium base alloys ; Two dimensional analysis</subject><ispartof>Ji xie gong cheng xue bao, 2024-01, Vol.60 (16), p.180</ispartof><rights>Copyright Chinese Mechanical Engineering Society (CMES) 2024</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids></links><search><creatorcontrib>Zhou, Jian</creatorcontrib><creatorcontrib>Xu, Hongkun</creatorcontrib><creatorcontrib>Liu, Kun</creatorcontrib><title>Study on the Densification Mechanism of Ti-6Al-4V Powder during High Velocity Compaction Based on the Evolution of Microscale Pores</title><title>Ji xie gong cheng xue bao</title><description>The high velocity compaction process of Ti-6Al-4V powder is simulated by using two-dimensional multi-particle finite element method. The morphological features of pores among particles are quantitatively characterized. The change laws regarding the morphology and area filling of various typical pores during the compaction process are analyzed in detail. The powder densification mechanism is studied from the aspect of the evolution of microscale pores. The simulation results show that when the compaction pressure is lower than a critical value（about 1 500 MPa）, pores are mainly filled by particle rearrangement and plastic deformation, so that the slope of the density-pressure curve is steep, and the green powder assembly is easily densified. Above that critical pressure,the slope of the density-pressure curve gradually decreases, and powder densification becomes difficult. Microscopically, at the stage of particle rearrangement and plastic deformation, there are many quadrilateral pores with large area-ratios</description><subject>Constitutive equations</subject><subject>Constitutive relationships</subject><subject>Critical pressure</subject><subject>Densification</subject><subject>Density</subject><subject>Evolution</subject><subject>Filling</subject><subject>Finite element method</subject><subject>Morphology</subject><subject>Plastic deformation</subject><subject>Polygons</subject><subject>Pressure curve</subject><subject>Quadrilaterals</subject><subject>Titanium base alloys</subject><subject>Two dimensional analysis</subject><issn>0577-6686</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNqNjE1rAkEQROeQQCTxPzTkvLDux6w5GjV4EQIRrzKZ7XVbxmmdnknwnD-eRZK7p4JXVe9OjfK6aTKtp_pBjUXoM5-URVPUdTVSPx8xtRdgD7FHWKAX6siaSANZo-2NJzkCd7ChTM9cVm3hnb9bDNCmQH4PK9r3sEXHluIF5nw8GXt9vxrB9l-8_GKXrnhQrckGFmscDq6A8qTuO-MEx3_5qJ7flpv5KjsFPieUuDtwCn6oduWkKspCT1_y8rbVL3voULc</recordid><startdate>20240101</startdate><enddate>20240101</enddate><creator>Zhou, Jian</creator><creator>Xu, Hongkun</creator><creator>Liu, Kun</creator><general>Chinese Mechanical Engineering Society (CMES)</general><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20240101</creationdate><title>Study on the Densification Mechanism of Ti-6Al-4V Powder during High Velocity Compaction Based on the Evolution of Microscale Pores</title><author>Zhou, Jian ; Xu, Hongkun ; Liu, Kun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_31423268903</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>chi</language><creationdate>2024</creationdate><topic>Constitutive equations</topic><topic>Constitutive relationships</topic><topic>Critical pressure</topic><topic>Densification</topic><topic>Density</topic><topic>Evolution</topic><topic>Filling</topic><topic>Finite element method</topic><topic>Morphology</topic><topic>Plastic deformation</topic><topic>Polygons</topic><topic>Pressure curve</topic><topic>Quadrilaterals</topic><topic>Titanium base alloys</topic><topic>Two dimensional analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhou, Jian</creatorcontrib><creatorcontrib>Xu, Hongkun</creatorcontrib><creatorcontrib>Liu, Kun</creatorcontrib><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Ji xie gong cheng xue bao</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhou, Jian</au><au>Xu, Hongkun</au><au>Liu, Kun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study on the Densification Mechanism of Ti-6Al-4V Powder during High Velocity Compaction Based on the Evolution of Microscale Pores</atitle><jtitle>Ji xie gong cheng xue bao</jtitle><date>2024-01-01</date><risdate>2024</risdate><volume>60</volume><issue>16</issue><spage>180</spage><pages>180-</pages><issn>0577-6686</issn><abstract>The high velocity compaction process of Ti-6Al-4V powder is simulated by using two-dimensional multi-particle finite element method. The morphological features of pores among particles are quantitatively characterized. The change laws regarding the morphology and area filling of various typical pores during the compaction process are analyzed in detail. The powder densification mechanism is studied from the aspect of the evolution of microscale pores. The simulation results show that when the compaction pressure is lower than a critical value（about 1 500 MPa）, pores are mainly filled by particle rearrangement and plastic deformation, so that the slope of the density-pressure curve is steep, and the green powder assembly is easily densified. Above that critical pressure,the slope of the density-pressure curve gradually decreases, and powder densification becomes difficult. Microscopically, at the stage of particle rearrangement and plastic deformation, there are many quadrilateral pores with large area-ratios</abstract><cop>Beijing</cop><pub>Chinese Mechanical Engineering Society (CMES)</pub></addata></record> |
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| language | chi |
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| subjects | Constitutive equations Constitutive relationships Critical pressure Densification Density Evolution Filling Finite element method Morphology Plastic deformation Polygons Pressure curve Quadrilaterals Titanium base alloys Two dimensional analysis |
| title | Study on the Densification Mechanism of Ti-6Al-4V Powder during High Velocity Compaction Based on the Evolution of Microscale Pores |
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