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Micro-hardness is a widely used mechanical property, that is token of plastic deforming resistance of materials and the capacity of strain hardening.
From Eq.(1), it can be seen that for polycrystalline materials, the material hardens as its grain size decreases.
Ren and et al: Corrosion Science and Protection Technology Vol. 20 (2008), p. 465 [5] Z.P.
Shao and et al: Journal of Materials Engineering and Performance, Vol. 12 (2003), p. 507 [12] Y.K.
Li and et al: Journal of Materials Engineering Vol. 46 (2002), p. 40

The high pressure rotor material is 30Cr1Mo1V and low-pressure rotor material is 30Cr2Ni4MoV-B3.
We also found that the stress concentration factors of journal 2 and journal 4 are larger.
Acknowledgements This work was financially supported by the National Science Foundation of China (Grant No.51075145).
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[3] Chengbing He，Dongchao Chen，Yujiong Gu, Study on dynamic response of torsional vibration of turbo-generator unit caused by short circuit fault, Advanced Materials Research. 566 (2012) 248-252

Ganguly, "Characterization of a ferrofluid-based thermomagnetic pump for microfluidic applications", Journal of Magnetism and Magnetic Materials 323 (2011), 2701-2709
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Kassem, "Analysis of homogeneous steady state nanofluid surrounding cylindrical solid pipes", Egyptian Journal for Engineering Sciences and Technology 31 (2020), 71-82

Wang, “Growth of Anisotropic One-dimensional ZnS Nanostructures”, Journal of Materials Chemistry, 16(40): pp.3898-3905, 2006
Pillai, “Characterization of Zinc Sulphide Thin Films Prepared Using RF Sputtering Technique”, Materials Today: Proceedings, 33, pp.1371-1378, 2020
Binetti, “Study of the Physical Properties of ZnS Thin Films Deposited by RF Sputtering”, Materials Science in Semiconductor Processing, 71, pp.7-11, 2017
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Rahman, “A Reviewon Zinc Sulphide Thin Film Fabrication forVarious Applications Based on Doping Elements”, Materials Sciences and Applications,9, pp.751-778, 2018

In this design, Polycarbonate with the refraction index 1.587 is taken as the given material.
Acknowledgment This paper is granted by the science and research projects of Department of Education of Sichuan Province (14ZB0365) and 2014 Science and Technology Projects of the City of Leshan.
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Application of TiO2 photocatalytic oxidation technology in water treatment [J].Science and Technology of Overseas Building and Materials, 2006, 27(3), 92-94
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Inhibition of Blue-green algae growth by Pt-doped nano- TiO2[J].Journal of functional materials, 2005, 12(36)：1934-1937

In this paper, we carried out Low cyclic loading test over CFRP strengthened seismic-damaged RC frame named KJ-2 with the quasi-static test method, and compared the seismic performance with the same sections and materials RC frame named KJ-1 which was unstrengthened.
In this paper, we carried out low cyclic loading test over CFRP strengthened seismic-damaged RC frame named KJ-2 with the quasi-static test method, and compared the seismic performance with the same sections and materials RC frame named KJ-1 which was unstrengthened.
And were tested in Shandong Province Key Laboratory of Civil Engineering Disaster Prevention and Mitigation (Shandong University of Science and Technology), using hydraulic servo structural test system.
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ACI Journal Engineering Structures，2002,24：1397-1407 [3] Bolong Zhu.

As a result, we obtained a good agreement between the experimental and the calculated void growth for both materials and it is also found that material parameters for damage evolutions are almost the same for both materials and are hardly affected by the work-hardening exponent.
The materials are considered as elastic-perfectly plastic solids in the numerical calculation.
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Gurson, Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part I—Yield Criteria and Flow Rules for Porous Ductile Media, Transaction of the ASME, Journal of Engineering Materials and Technology, 99(1977) 2-15
Goya, An Anisotropic Yield Function for Porous Metal, Materials Science and Engineering: A, 142(1991) 163-168.

Experiment Materials.
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Journal of applied polymer science, 2002. 83: p. 2331-2346
Journal of applied polymer science, 2005. 98: p. 34-41

Contreras, Failure analysis and mechanical performance of an oil pipeline, Materials & Design 50 (2013) 766-773
Bhadeshia, Residual stress Part 1 – Measurement techniques, Materials Science and Technology 17 (2001) 355-365
Contreras, Effect of multiple repairs in girth welds of pipelines on the mechanical properties, Materials Characterization 59 (2008) 1498-1507
Chen, Stress corrosion cracking of X80 pipeline steel in simulated alkaline soil solution, Materials and Design 30 (2009) 1712-1717
Ke, Review of stress corrosion cracking of pipeline steels in low and high pH solutions, Journal of Materials Science 38 (2003) 127-132