Analysis on split-head cracking of Y1Cr13 stainless rolled bar

Wu Liangping; Sun Han; Xie Jianbo; Wu Xiangyu; Fu Jianxun

doi:10.7513/j.issn.1004-7638.2021.01.029

Volume 42 Issue 1

Feb. 2021

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Wu Liangping, Sun Han, Xie Jianbo, Wu Xiangyu, Fu Jianxun. Analysis on split-head cracking of Y1Cr13 stainless rolled bar[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 176-183. doi: 10.7513/j.issn.1004-7638.2021.01.029

Citation:

Wu Liangping, Sun Han, Xie Jianbo, Wu Xiangyu, Fu Jianxun. Analysis on split-head cracking of Y1Cr13 stainless rolled bar[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 176-183. doi: 10.7513/j.issn.1004-7638.2021.01.029

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Analysis on split-head cracking of Y1Cr13 stainless rolled bar

doi: 10.7513/j.issn.1004-7638.2021.01.029

Center for Advanced Solidification Technology, School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

Received Date: 2020-05-22
Publish Date: 2021-02-10

Abstract

Abstract

In order to find out the causes of split-head cracking of Y1Cr13 stainless steel in the rolling process, the splitting samples of steel were analyzed and characterized from the view of inclusions microstructure with a metallographic microscope, a scanning electron microscope and the method of electrolytic etching. Also, the causes of split-head crackingof Y1Cr13 stainless steel during the rolling process were explored. The results show that there exist a lot of long strip sulfides in rolled steel, and the ratio of length/width of sulfides is large. The proportion of the inclusions with length/width ratio below 3 is 65.4%. The proportion of the inclusions with length/width ratio above 3 is 34.6%. The standard ratings of sulfides are 4.5 for coarse series, 5.5 for fine series, and 3-3 for German standard. A large number of long strip hot shortness manganese sulfides and ferromanganese sulfides are the main causes of split-head cracking of Y1Cr13 rolled bar. Such as magnesium and tellurium can be used to modify the form of sulfide into a spherical or spindle shape, and increase the hardness of the sulfide, making it difficult to deform during rolling. The (Mn, Fe) sulfide in steel can be reduced by properly reducing [S] content and increasing Mn/S in steel.
- Y1Cr13 stainless steel,
- split-head,
- cracking,
- manganesesulfide,
- ferromanganesesulfide

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References(17)

References

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