Effect of hot press sintering parameters on microstructure and mechanical properties of Ti35421
The Ti‒3Al‒5Mo‒4Cr‒2Zr‒1Fe (Ti-35421, mass fraction) titanium alloys were prepared by hot pressing sintering in this paper. The influences of sintering temperature, sintering pressure, and holding time on the microstructure and mechanical properties of Ti-35421 alloys were explored by orthogonal exp...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Powder Metallurgy Technology
2025-04-01
|
| Series: | Fenmo yejin jishu |
| Subjects: | |
| Online Access: | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2023120008 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850150648701517824 |
|---|---|
| author | JIA Guorong LU Leiyi MIN Jin CAO Xihao GUO Yanhua SUN Zhonggang CHANG Hui |
| author_facet | JIA Guorong LU Leiyi MIN Jin CAO Xihao GUO Yanhua SUN Zhonggang CHANG Hui |
| author_sort | JIA Guorong |
| collection | DOAJ |
| description | The Ti‒3Al‒5Mo‒4Cr‒2Zr‒1Fe (Ti-35421, mass fraction) titanium alloys were prepared by hot pressing sintering in this paper. The influences of sintering temperature, sintering pressure, and holding time on the microstructure and mechanical properties of Ti-35421 alloys were explored by orthogonal experiments and characterized by relative density, secondary α phase dimension, hardness, and compression properties. The results show that the sintering temperature is the most important parameter affecting the properties of Ti-35421 alloys. As the sintering temperature increases, the yield strength first increases and then decreases, the fracture strain first decreases and then becomes stable. At the same time, the high sintering temperature causes the grain growth, which reduces the compressive properties of the Ti-35421 alloys. The optimal sintering parameters are followed as the temperature of 900 ℃, the sintering pressure of 45 MPa, and the sintering time of 2 h, and the corresponding yield strength and fracture strain of the Ti-35421 alloys reach 1248 MPa and 23.03%, respectively. The Ti-35421 alloys obtained by hot pressing sintering are mainly composed of the original β grains and secondary α phase within the grains. As the sintering temperature increases, the size of β grains in the sintered body increases significantly, and the aspect ratio of the secondary α phase also increases. |
| format | Article |
| id | doaj-art-36140e54560a4e00bd5ad4c0fde0ca22 |
| institution | OA Journals |
| issn | 1001-3784 |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Editorial Office of Powder Metallurgy Technology |
| record_format | Article |
| series | Fenmo yejin jishu |
| spelling | doaj-art-36140e54560a4e00bd5ad4c0fde0ca222025-08-20T02:26:30ZzhoEditorial Office of Powder Metallurgy TechnologyFenmo yejin jishu1001-37842025-04-0143215316210.19591/j.cnki.cn11-1974/tf.2023120008Effect of hot press sintering parameters on microstructure and mechanical properties of Ti35421JIA Guorong0LU Leiyi1MIN Jin2CAO Xihao3GUO Yanhua4SUN Zhonggang5CHANG Hui6College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210037, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210037, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210037, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210037, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210037, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210037, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210037, ChinaThe Ti‒3Al‒5Mo‒4Cr‒2Zr‒1Fe (Ti-35421, mass fraction) titanium alloys were prepared by hot pressing sintering in this paper. The influences of sintering temperature, sintering pressure, and holding time on the microstructure and mechanical properties of Ti-35421 alloys were explored by orthogonal experiments and characterized by relative density, secondary α phase dimension, hardness, and compression properties. The results show that the sintering temperature is the most important parameter affecting the properties of Ti-35421 alloys. As the sintering temperature increases, the yield strength first increases and then decreases, the fracture strain first decreases and then becomes stable. At the same time, the high sintering temperature causes the grain growth, which reduces the compressive properties of the Ti-35421 alloys. The optimal sintering parameters are followed as the temperature of 900 ℃, the sintering pressure of 45 MPa, and the sintering time of 2 h, and the corresponding yield strength and fracture strain of the Ti-35421 alloys reach 1248 MPa and 23.03%, respectively. The Ti-35421 alloys obtained by hot pressing sintering are mainly composed of the original β grains and secondary α phase within the grains. As the sintering temperature increases, the size of β grains in the sintered body increases significantly, and the aspect ratio of the secondary α phase also increases.https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2023120008titanium alloyspowder metallurgyhot pressing sinteringmicrostructuremechanical properties |
| spellingShingle | JIA Guorong LU Leiyi MIN Jin CAO Xihao GUO Yanhua SUN Zhonggang CHANG Hui Effect of hot press sintering parameters on microstructure and mechanical properties of Ti35421 Fenmo yejin jishu titanium alloys powder metallurgy hot pressing sintering microstructure mechanical properties |
| title | Effect of hot press sintering parameters on microstructure and mechanical properties of Ti35421 |
| title_full | Effect of hot press sintering parameters on microstructure and mechanical properties of Ti35421 |
| title_fullStr | Effect of hot press sintering parameters on microstructure and mechanical properties of Ti35421 |
| title_full_unstemmed | Effect of hot press sintering parameters on microstructure and mechanical properties of Ti35421 |
| title_short | Effect of hot press sintering parameters on microstructure and mechanical properties of Ti35421 |
| title_sort | effect of hot press sintering parameters on microstructure and mechanical properties of ti35421 |
| topic | titanium alloys powder metallurgy hot pressing sintering microstructure mechanical properties |
| url | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2023120008 |
| work_keys_str_mv | AT jiaguorong effectofhotpresssinteringparametersonmicrostructureandmechanicalpropertiesofti35421 AT luleiyi effectofhotpresssinteringparametersonmicrostructureandmechanicalpropertiesofti35421 AT minjin effectofhotpresssinteringparametersonmicrostructureandmechanicalpropertiesofti35421 AT caoxihao effectofhotpresssinteringparametersonmicrostructureandmechanicalpropertiesofti35421 AT guoyanhua effectofhotpresssinteringparametersonmicrostructureandmechanicalpropertiesofti35421 AT sunzhonggang effectofhotpresssinteringparametersonmicrostructureandmechanicalpropertiesofti35421 AT changhui effectofhotpresssinteringparametersonmicrostructureandmechanicalpropertiesofti35421 |