Effect of Y2O3–CeO2 two-phase dispersion strengthening on the grain size and tensile properties of Mo alloys
Mo–Y–Ce alloys doped by yttrium oxide (Y2O3) and cerium oxide (CeO2) in different mass fraction were prepared by the nanometer spray doping technology and the powder metallurgy method. The two-phase dispersion strengthening effect of Y2O3 and CeO2 on the grain size and mechanical properties of Mo al...
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| Format: | Article |
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Editorial Office of Powder Metallurgy Technology
2021-06-01
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| Series: | Fenmo yejin jishu |
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| Online Access: | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021030006 |
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| author | DUAN Lin-lin FENG Peng-fa DANG Xiao-ming |
| author_facet | DUAN Lin-lin FENG Peng-fa DANG Xiao-ming |
| author_sort | DUAN Lin-lin |
| collection | DOAJ |
| description | Mo–Y–Ce alloys doped by yttrium oxide (Y2O3) and cerium oxide (CeO2) in different mass fraction were prepared by the nanometer spray doping technology and the powder metallurgy method. The two-phase dispersion strengthening effect of Y2O3 and CeO2 on the grain size and mechanical properties of Mo alloys at room temperature was studied. The results show that Y2O3 restrains the abnormal growth of the individual grains and has the effect of precipitation strengthening. The mechanical properties of the Mo–Y alloy wires are closely related to the doping amount of Y2O3. When the mass fraction of Y2O3 is 0.60%, the tensile strength and yield strength of the ϕ1.8-mm Mo–Y alloy wires reach 1050 and 923 MPa, respectively. Because of the semi-coherent relationship between CeO2 and the Mo matrix, CeO2 has the good toughening effect. When the mass fraction of CeO2 is 0.06%~0.08%, the grain size of the sintered Mo–Y–Ce alloys is smaller than 10 μm, the tensile strength and yield strength of the ϕ1.8-mm Mo–Y–Ce alloy wires are 1130 and 1018 MPa, respectively, the elongation reaches 28.5%. The tensile strength of ϕ0.18-mm Mo–Y–Ce alloy wires reaches 2510 MPa. The optimal composition of the Mo–Y–Ce two-phase dispersion strengthening Mo alloys is Mo–0.6Y2O3–(0.06~0.08)CeO2. |
| format | Article |
| id | doaj-art-cd957587235d4ef7a43c4f493e924cc7 |
| institution | OA Journals |
| issn | 1001-3784 |
| language | zho |
| publishDate | 2021-06-01 |
| publisher | Editorial Office of Powder Metallurgy Technology |
| record_format | Article |
| series | Fenmo yejin jishu |
| spelling | doaj-art-cd957587235d4ef7a43c4f493e924cc72025-08-20T01:59:00ZzhoEditorial Office of Powder Metallurgy TechnologyFenmo yejin jishu1001-37842021-06-0139322322810.19591/j.cnki.cn11-1974/tf.2021030006Effect of Y2O3–CeO2 two-phase dispersion strengthening on the grain size and tensile properties of Mo alloysDUAN Lin-linFENG Peng-faDANG Xiao-mingMo–Y–Ce alloys doped by yttrium oxide (Y2O3) and cerium oxide (CeO2) in different mass fraction were prepared by the nanometer spray doping technology and the powder metallurgy method. The two-phase dispersion strengthening effect of Y2O3 and CeO2 on the grain size and mechanical properties of Mo alloys at room temperature was studied. The results show that Y2O3 restrains the abnormal growth of the individual grains and has the effect of precipitation strengthening. The mechanical properties of the Mo–Y alloy wires are closely related to the doping amount of Y2O3. When the mass fraction of Y2O3 is 0.60%, the tensile strength and yield strength of the ϕ1.8-mm Mo–Y alloy wires reach 1050 and 923 MPa, respectively. Because of the semi-coherent relationship between CeO2 and the Mo matrix, CeO2 has the good toughening effect. When the mass fraction of CeO2 is 0.06%~0.08%, the grain size of the sintered Mo–Y–Ce alloys is smaller than 10 μm, the tensile strength and yield strength of the ϕ1.8-mm Mo–Y–Ce alloy wires are 1130 and 1018 MPa, respectively, the elongation reaches 28.5%. The tensile strength of ϕ0.18-mm Mo–Y–Ce alloy wires reaches 2510 MPa. The optimal composition of the Mo–Y–Ce two-phase dispersion strengthening Mo alloys is Mo–0.6Y2O3–(0.06~0.08)CeO2.https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021030006two-phase dispersion strengtheningmo alloysalloy wiresgrain sizemechanical properties |
| spellingShingle | DUAN Lin-lin FENG Peng-fa DANG Xiao-ming Effect of Y2O3–CeO2 two-phase dispersion strengthening on the grain size and tensile properties of Mo alloys Fenmo yejin jishu two-phase dispersion strengthening mo alloys alloy wires grain size mechanical properties |
| title | Effect of Y2O3–CeO2 two-phase dispersion strengthening on the grain size and tensile properties of Mo alloys |
| title_full | Effect of Y2O3–CeO2 two-phase dispersion strengthening on the grain size and tensile properties of Mo alloys |
| title_fullStr | Effect of Y2O3–CeO2 two-phase dispersion strengthening on the grain size and tensile properties of Mo alloys |
| title_full_unstemmed | Effect of Y2O3–CeO2 two-phase dispersion strengthening on the grain size and tensile properties of Mo alloys |
| title_short | Effect of Y2O3–CeO2 two-phase dispersion strengthening on the grain size and tensile properties of Mo alloys |
| title_sort | effect of y2o3 ceo2 two phase dispersion strengthening on the grain size and tensile properties of mo alloys |
| topic | two-phase dispersion strengthening mo alloys alloy wires grain size mechanical properties |
| url | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021030006 |
| work_keys_str_mv | AT duanlinlin effectofy2o3ceo2twophasedispersionstrengtheningonthegrainsizeandtensilepropertiesofmoalloys AT fengpengfa effectofy2o3ceo2twophasedispersionstrengtheningonthegrainsizeandtensilepropertiesofmoalloys AT dangxiaoming effectofy2o3ceo2twophasedispersionstrengtheningonthegrainsizeandtensilepropertiesofmoalloys |