Comparative study on wear resistance of plastic die steels NAK80 and S136

Xie Yi; Xian Yong

doi:10.7513/j.issn.1004-7638.2021.04.024

Volume 42 Issue 4

Aug. 2021

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Xie Yi, Xian Yong. Comparative study on wear resistance of plastic die steels NAK80 and S136[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 144-148. doi: 10.7513/j.issn.1004-7638.2021.04.024

Citation:

Xie Yi, Xian Yong. Comparative study on wear resistance of plastic die steels NAK80 and S136[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 144-148. doi: 10.7513/j.issn.1004-7638.2021.04.024

Xie Yi, Xian Yong. Comparative study on wear resistance of plastic die steels NAK80 and S136[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 144-148. doi: 10.7513/j.issn.1004-7638.2021.04.024

Citation:

Xie Yi, Xian Yong. Comparative study on wear resistance of plastic die steels NAK80 and S136[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 144-148. doi: 10.7513/j.issn.1004-7638.2021.04.024

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Comparative study on wear resistance of plastic die steels NAK80 and S136

doi: 10.7513/j.issn.1004-7638.2021.04.024

Xie Yi^1
,,
Xian Yong^{2
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1.
School of Automotive Engineering, Chongqing Three Gorges Vocational College, Wanzhou 404000, Chongqing, China
2.
School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 611730, Sichuan, China

Received Date: 2021-06-26
Publish Date: 2021-08-10

Abstract

Abstract

The microhardness, microstructure, friction and wear behavior of pre-hardened plastic die steels NAK80 and S136 were studied. The results show that the microstructure of NAK80 steel consists of lath martensite and granular bainite, while that of S136 steel are ferrite matrix and fine carbides, and the microhardness is 405.01 ± 63 HV and 354.21 HV ± 6.14 HV respectively. The friction coefficients of NAK80 and S136 steel decrease with the increase of load. At 60N, the friction coefficients of NAK80 and S136 steel reach their lowest values (0.34 and 0.37). However, when the load increases to 80 N, the friction coefficient increases. Overall, the friction coefficient of S136 is higher than that of NAK80. The wear behavior of NAK80 has high load sensitivity under different load conditions while S136 has more stable wear resistance. At low load, abrasive wear and delamination wear are dominant, and the wear resistance of NAK80 is better than that of S136. At high load, adhesive wear and abrasive wear are dominant, and the wear resistance of S136 steel is better than that of NAK80.
- die steel,
- load,
- hardness,
- microstructure,
- wear resistance properties

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References

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