Study on the dissolution of intermetallic compounds and austenite grain growth behavior in Cr-Ni-Mo-Ti-Al ultra-high strength stainless steel
In this work, the austenite grain growth behavior of an ultra-low carbon cobalt-free ultra-high strength stainless steel is studied in the temperature range of 820 °C–1020 °C and the holding time of 0–150 min. The experimental results indicate that in the temperature range below 880 °C, there are a...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ade951 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849701434966147072 |
|---|---|
| author | Jiahao Chen Zhenbao Liu Xiaohui Wang Fengchun Jiang Yuqiao Zhang Zhiyong Yang Jianxiong Liang Wenyu Zhao |
| author_facet | Jiahao Chen Zhenbao Liu Xiaohui Wang Fengchun Jiang Yuqiao Zhang Zhiyong Yang Jianxiong Liang Wenyu Zhao |
| author_sort | Jiahao Chen |
| collection | DOAJ |
| description | In this work, the austenite grain growth behavior of an ultra-low carbon cobalt-free ultra-high strength stainless steel is studied in the temperature range of 820 °C–1020 °C and the holding time of 0–150 min. The experimental results indicate that in the temperature range below 880 °C, there are a large number of Fe _2 Mo-type Laves phases in the steel. The austenite grain size shows no significant change (∼23 μm) upon increasing the isothermal holding temperature or extending the holding time below 880 °C, which is attributed to the pinning effect of the Laves phases. At holding temperatures of 900 °C–960 °C, partial dissolution of the Laves phases reduces their pinning efficacy, triggering incipient grain growth. When the temperature is further increased to 980 °C or above, the Laves phase completely dissolves during the initial heating stage. The grains undergo accelerated coarsening with increasing isothermal holding temperature and prolonged holding time. Mathematical models for austenite grain growth in ultra-low-carbon cobalt-free ultra-high strength stainless steel are established in the temperature ranges of 900 °C–960 °C and 980 °C–1020 °C, with the optimal grain growth exponents (n) determined as 1.518175 and 1.614925, respectively. This study clarifies the effects of heating temperature, holding time, and initial grain size on austenite grain growth. The accuracy and reliability of the model are validated by comparing calculated values with experimentally measured data, achieving an average absolute relative error (AARE) of 1.33026% and a coefficient of determination (R ^2 ) of 0.99768. |
| format | Article |
| id | doaj-art-6d7750a0d20344d0bb23991fad2e01bf |
| institution | DOAJ |
| issn | 2053-1591 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj-art-6d7750a0d20344d0bb23991fad2e01bf2025-08-20T03:17:56ZengIOP PublishingMaterials Research Express2053-15912025-01-0112707651010.1088/2053-1591/ade951Study on the dissolution of intermetallic compounds and austenite grain growth behavior in Cr-Ni-Mo-Ti-Al ultra-high strength stainless steelJiahao Chen0https://orcid.org/0009-0008-8353-6826Zhenbao Liu1Xiaohui Wang2https://orcid.org/0009-0001-4817-9674Fengchun Jiang3https://orcid.org/0000-0002-7187-4819Yuqiao Zhang4Zhiyong Yang5Jianxiong Liang6Wenyu Zhao7Yantai Research Institute, Harbin Engineering University , Yantai, Shandong, 264000, People’s Republic of China; Institute for Special Steel Institute, Central Iron and Steel Research Institute , Beijing, 100081, People’s Republic of ChinaInstitute for Special Steel Institute, Central Iron and Steel Research Institute , Beijing, 100081, People’s Republic of ChinaInstitute for Special Steel Institute, Central Iron and Steel Research Institute , Beijing, 100081, People’s Republic of ChinaYantai Research Institute, Harbin Engineering University , Yantai, Shandong, 264000, People’s Republic of ChinaInstitute of Quantum and Sustainable Technology (IQST), School of Chemistry and Chemical Engineering, Jiangsu University , Zhenjiang, Jiangsu, 212013, People’s Republic of ChinaInstitute for Special Steel Institute, Central Iron and Steel Research Institute , Beijing, 100081, People’s Republic of ChinaInstitute for Special Steel Institute, Central Iron and Steel Research Institute , Beijing, 100081, People’s Republic of ChinaInstitute for Special Steel Institute, Central Iron and Steel Research Institute , Beijing, 100081, People’s Republic of ChinaIn this work, the austenite grain growth behavior of an ultra-low carbon cobalt-free ultra-high strength stainless steel is studied in the temperature range of 820 °C–1020 °C and the holding time of 0–150 min. The experimental results indicate that in the temperature range below 880 °C, there are a large number of Fe _2 Mo-type Laves phases in the steel. The austenite grain size shows no significant change (∼23 μm) upon increasing the isothermal holding temperature or extending the holding time below 880 °C, which is attributed to the pinning effect of the Laves phases. At holding temperatures of 900 °C–960 °C, partial dissolution of the Laves phases reduces their pinning efficacy, triggering incipient grain growth. When the temperature is further increased to 980 °C or above, the Laves phase completely dissolves during the initial heating stage. The grains undergo accelerated coarsening with increasing isothermal holding temperature and prolonged holding time. Mathematical models for austenite grain growth in ultra-low-carbon cobalt-free ultra-high strength stainless steel are established in the temperature ranges of 900 °C–960 °C and 980 °C–1020 °C, with the optimal grain growth exponents (n) determined as 1.518175 and 1.614925, respectively. This study clarifies the effects of heating temperature, holding time, and initial grain size on austenite grain growth. The accuracy and reliability of the model are validated by comparing calculated values with experimentally measured data, achieving an average absolute relative error (AARE) of 1.33026% and a coefficient of determination (R ^2 ) of 0.99768.https://doi.org/10.1088/2053-1591/ade951ultra-low carbonultra-high strength stainless steelaustenite grain growthmathematical modellaves phases |
| spellingShingle | Jiahao Chen Zhenbao Liu Xiaohui Wang Fengchun Jiang Yuqiao Zhang Zhiyong Yang Jianxiong Liang Wenyu Zhao Study on the dissolution of intermetallic compounds and austenite grain growth behavior in Cr-Ni-Mo-Ti-Al ultra-high strength stainless steel Materials Research Express ultra-low carbon ultra-high strength stainless steel austenite grain growth mathematical model laves phases |
| title | Study on the dissolution of intermetallic compounds and austenite grain growth behavior in Cr-Ni-Mo-Ti-Al ultra-high strength stainless steel |
| title_full | Study on the dissolution of intermetallic compounds and austenite grain growth behavior in Cr-Ni-Mo-Ti-Al ultra-high strength stainless steel |
| title_fullStr | Study on the dissolution of intermetallic compounds and austenite grain growth behavior in Cr-Ni-Mo-Ti-Al ultra-high strength stainless steel |
| title_full_unstemmed | Study on the dissolution of intermetallic compounds and austenite grain growth behavior in Cr-Ni-Mo-Ti-Al ultra-high strength stainless steel |
| title_short | Study on the dissolution of intermetallic compounds and austenite grain growth behavior in Cr-Ni-Mo-Ti-Al ultra-high strength stainless steel |
| title_sort | study on the dissolution of intermetallic compounds and austenite grain growth behavior in cr ni mo ti al ultra high strength stainless steel |
| topic | ultra-low carbon ultra-high strength stainless steel austenite grain growth mathematical model laves phases |
| url | https://doi.org/10.1088/2053-1591/ade951 |
| work_keys_str_mv | AT jiahaochen studyonthedissolutionofintermetalliccompoundsandaustenitegraingrowthbehaviorincrnimotialultrahighstrengthstainlesssteel AT zhenbaoliu studyonthedissolutionofintermetalliccompoundsandaustenitegraingrowthbehaviorincrnimotialultrahighstrengthstainlesssteel AT xiaohuiwang studyonthedissolutionofintermetalliccompoundsandaustenitegraingrowthbehaviorincrnimotialultrahighstrengthstainlesssteel AT fengchunjiang studyonthedissolutionofintermetalliccompoundsandaustenitegraingrowthbehaviorincrnimotialultrahighstrengthstainlesssteel AT yuqiaozhang studyonthedissolutionofintermetalliccompoundsandaustenitegraingrowthbehaviorincrnimotialultrahighstrengthstainlesssteel AT zhiyongyang studyonthedissolutionofintermetalliccompoundsandaustenitegraingrowthbehaviorincrnimotialultrahighstrengthstainlesssteel AT jianxiongliang studyonthedissolutionofintermetalliccompoundsandaustenitegraingrowthbehaviorincrnimotialultrahighstrengthstainlesssteel AT wenyuzhao studyonthedissolutionofintermetalliccompoundsandaustenitegraingrowthbehaviorincrnimotialultrahighstrengthstainlesssteel |