Effect of Rare Earth Cerium and Heat Treatment on Inclusions in As-cast U75V Steel AITranslate
Abstract AITranslate
The effects of adding rare earth to steel,heat treatment process and their combined action on MnS-dominated inclusions in steel were studied by using as-cast U75V as the experimental steel grade.The results show that there are three main types of inclusions in the original as-cast U75V steelpure MnS inclusions,Al2O3-SiO2-MnO composite inclusions and MnS semi-encapsulated Al2O3-SiO2composite inclusions.The average size of the inclusions is 4.75μm and the average aspect ratio is 1.27.When the original U75V ingot is heated to 1300 ℃ for 1 h and then air-cooled,there is no significant change in the type and composition of the inclusions in the steel,but their average size is reduced to 3.8μm,a reduction of about 20%,and the average aspect ratio is reduced by nearly 4.7%.The addition of 0.0013%rare earth Ce to steel complicates the composition of inclusions,and in addition to pure MnS,three other different forms of inclusions containing Ce are found.Also,the addition of rare earth Ce significantly reduces the average size of inclusions by 1.91μm(about 40%)compared with the original U75V steel,but the aspect ratio of inclusions increases slightly by about 1.6%.The addition of rare earth Ce to the steel followed by heat treatment at 130o C for 1 h and then air-cooling results in a reduction of the average size of inclusions of about 34%compared with the original U75V steel,while the aspect ratio of inclusions is slightly reduced by 2.4%.In comparison,the addition of 0.0013%rare earth Ce to U75V steel and subjecting it to heat treatment at 1300℃for 1 h and then air-cooling result in a significant reduction in the size and aspect ratio of MnS and otherrelated inclusions in the steel.
KeyWords AITranslate
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.454[金属学及工艺—金属材料]
Citation Information:
The effects of adding rare earth to steel,heat treatment process and their combined action on MnS-dominated inclusions in steel were studied by using as-cast U75V as the experimental steel grade.The results show that there are three main types of inclusions in the original as-cast U75V steelpure MnS inclusions,Al2O3-SiO2-MnO composite inclusions and MnS semi-encapsulated Al2O3-SiO2composite inclusions.The average size of the inclusions is 4.75μm and the average aspect ratio is 1.27.When the original U75V ingot is heated to 1300 ℃ for 1 h and then air-cooled,there is no significant change in the type and composition of the inclusions in the steel,but their average size is reduced to 3.8μm,a reduction of about 20%,and the average aspect ratio is reduced by nearly 4.7%.The addition of 0.0013%rare earth Ce to steel complicates the composition of inclusions,and in addition to pure MnS,three other different forms of inclusions containing Ce are found.Also,the addition of rare earth Ce significantly reduces the average size of inclusions by 1.91μm(about 40%)compared with the original U75V steel,but the aspect ratio of inclusions increases slightly by about 1.6%.The addition of rare earth Ce to the steel followed by heat treatment at 130o C for 1 h and then air-cooling results in a reduction of the average size of inclusions of about 34%compared with the original U75V steel,while the aspect ratio of inclusions is slightly reduced by 2.4%.In comparison,the addition of 0.0013%rare earth Ce to U75V steel and subjecting it to heat treatment at 1300℃for 1 h and then air-cooling result in a significant reduction in the size and aspect ratio of MnS and otherrelated inclusions in the steel.
quote
| GB/T 7714-2015 | [1] ZHANG Hai-nan, CAO Jian-qiang, REN Lei, et al. Effect of Rare Earth Cerium and Heat Treatment on Inclusions in As-cast U75V Steel[J]. Rare Metals and Cemented Carbides, 2022(4): 62-70. |
| MLA | [1] ZHANG Hai-nan, et al., "Effect of Rare Earth Cerium and Heat Treatment on Inclusions in As-cast U75V Steel." Rare Metals and Cemented Carbides, no. 4, 2022, pp. 62-70. |
| APA | [1] ZHANG Hai-nan, CAO Jian-qiang, REN Lei, & YANG JI-chun. (2022). Effect of Rare Earth Cerium and Heat Treatment on Inclusions in As-cast U75V Steel. Rare Metals and Cemented Carbides(4), 62-70. |
| IEEE | [1] ZHANG Hai-nan, CAO Jian-qiang, REN Lei, and YANG JI-chun, "Effect of Rare Earth Cerium and Heat Treatment on Inclusions in As-cast U75V Steel," Rare Metals and Cemented Carbides, no. 4, pp. 62-70, 2022. keywords: {rare earth Ce;U75V heavy rail steel;heat treatment;inclusion;size;aspect ratio} |