Insights into effect of first-step austempering temperature on the microstructure and properties of austempered ductile iron
Austempered ductile iron (ADI) is a revolutionary material with high strength and hardness combined with excellent ductility and toughness. The discovery of a two-step austempering process has resulted in superior combination of all the mechanical properties. Therefore, ADI has many different applic...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2021-01-01
|
| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac1ca8 |
| _version_ | 1797746868825882624 |
|---|---|
| author | Yu Zhang Erjun Guo Liping Wang Sicong Zhao Xiaoyu Liu Pengyue Yi Yan Li Yicheng Feng Meihui Song |
| author_facet | Yu Zhang Erjun Guo Liping Wang Sicong Zhao Xiaoyu Liu Pengyue Yi Yan Li Yicheng Feng Meihui Song |
| author_sort | Yu Zhang |
| collection | DOAJ |
| description | Austempered ductile iron (ADI) is a revolutionary material with high strength and hardness combined with excellent ductility and toughness. The discovery of a two-step austempering process has resulted in superior combination of all the mechanical properties. Therefore, ADI has many different applications in varying fields. One notable application of ADI is in transmission components for new energy vehicles. As the automotive continues to develop, ADI transmission components with higher damping properties are required, because the damping properties of ADI affect the vibration and noise of the transmission system. However, the mechanism behind the damping of ADI, as well as a full characterisation of the damping properties, has not been thoroughly investigated in the literature. Therefore, it is necessary to reveal the influencing factors and mechanism of the damping properties of ADI. In this paper, the effect of first-step austempering temperature on the microstructure, mechanical properties, and damping properties of ADI was investigated. The results revealed that the tensile strength, yield strength, and elongation of ADI all initially increased, until reaching a global maximum value (1320 MPa, 1230 MPa, and 13.2%, respectively) when the first-step austempering temperature was 280 °C, followed by a decrease in value. Interestingly, the impact energy of ADI initially decreased before reaching a global minimum and then increasing to a maximum value of 93.5 J, when the first-step austempering temperature reached 320 °C. With increasing strain amplitude, the internal friction values (Q ^−1 ) of ADI treated with different first-step austempering temperatures all increased gradually, and the Q ^−1 values of ADI with first-step austempering temperatures of 240 and 260 °C were higher than those of other samples. Moreover, the damping properties of ADI varied with frequency with obvious S-K peaks and Ge peaks. |
| first_indexed | 2024-03-12T15:42:57Z |
| format | Article |
| id | doaj.art-375f1b2a9bd3480b907168b0a096ccd1 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:42:57Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-375f1b2a9bd3480b907168b0a096ccd12023-08-09T15:53:15ZengIOP PublishingMaterials Research Express2053-15912021-01-018808651210.1088/2053-1591/ac1ca8Insights into effect of first-step austempering temperature on the microstructure and properties of austempered ductile ironYu Zhang0https://orcid.org/0000-0003-3843-3699Erjun Guo1https://orcid.org/0000-0003-2785-5829Liping Wang2https://orcid.org/0000-0002-6856-7527Sicong Zhao3Xiaoyu Liu4Pengyue Yi5Yan Li6Yicheng Feng7https://orcid.org/0000-0002-4562-5827Meihui Song8School of Materials Science and Engineering, Harbin University of Science and Technology , Harbin, People’s Republic of China; Institute of Advanced Technology, Heilongjiang Academy of Sciences, Harbin, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology , Harbin, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology , Harbin, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology , Harbin, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology , Harbin, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology , Harbin, People’s Republic of ChinaInstitute of Advanced Technology, Heilongjiang Academy of Sciences, Harbin, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology , Harbin, People’s Republic of ChinaSchool of Materials Science and Engineering, Harbin University of Science and Technology , Harbin, People’s Republic of ChinaAustempered ductile iron (ADI) is a revolutionary material with high strength and hardness combined with excellent ductility and toughness. The discovery of a two-step austempering process has resulted in superior combination of all the mechanical properties. Therefore, ADI has many different applications in varying fields. One notable application of ADI is in transmission components for new energy vehicles. As the automotive continues to develop, ADI transmission components with higher damping properties are required, because the damping properties of ADI affect the vibration and noise of the transmission system. However, the mechanism behind the damping of ADI, as well as a full characterisation of the damping properties, has not been thoroughly investigated in the literature. Therefore, it is necessary to reveal the influencing factors and mechanism of the damping properties of ADI. In this paper, the effect of first-step austempering temperature on the microstructure, mechanical properties, and damping properties of ADI was investigated. The results revealed that the tensile strength, yield strength, and elongation of ADI all initially increased, until reaching a global maximum value (1320 MPa, 1230 MPa, and 13.2%, respectively) when the first-step austempering temperature was 280 °C, followed by a decrease in value. Interestingly, the impact energy of ADI initially decreased before reaching a global minimum and then increasing to a maximum value of 93.5 J, when the first-step austempering temperature reached 320 °C. With increasing strain amplitude, the internal friction values (Q ^−1 ) of ADI treated with different first-step austempering temperatures all increased gradually, and the Q ^−1 values of ADI with first-step austempering temperatures of 240 and 260 °C were higher than those of other samples. Moreover, the damping properties of ADI varied with frequency with obvious S-K peaks and Ge peaks.https://doi.org/10.1088/2053-1591/ac1ca8ADItwo-step austempering processmicrostructuremechanical propertiesdamping properties |
| spellingShingle | Yu Zhang Erjun Guo Liping Wang Sicong Zhao Xiaoyu Liu Pengyue Yi Yan Li Yicheng Feng Meihui Song Insights into effect of first-step austempering temperature on the microstructure and properties of austempered ductile iron Materials Research Express ADI two-step austempering process microstructure mechanical properties damping properties |
| title | Insights into effect of first-step austempering temperature on the microstructure and properties of austempered ductile iron |
| title_full | Insights into effect of first-step austempering temperature on the microstructure and properties of austempered ductile iron |
| title_fullStr | Insights into effect of first-step austempering temperature on the microstructure and properties of austempered ductile iron |
| title_full_unstemmed | Insights into effect of first-step austempering temperature on the microstructure and properties of austempered ductile iron |
| title_short | Insights into effect of first-step austempering temperature on the microstructure and properties of austempered ductile iron |
| title_sort | insights into effect of first step austempering temperature on the microstructure and properties of austempered ductile iron |
| topic | ADI two-step austempering process microstructure mechanical properties damping properties |
| url | https://doi.org/10.1088/2053-1591/ac1ca8 |
| work_keys_str_mv | AT yuzhang insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron AT erjunguo insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron AT lipingwang insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron AT sicongzhao insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron AT xiaoyuliu insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron AT pengyueyi insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron AT yanli insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron AT yichengfeng insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron AT meihuisong insightsintoeffectoffirststepaustemperingtemperatureonthemicrostructureandpropertiesofaustemperedductileiron |