Study on the Surface Modification Using Laser Roughing and Fe-Based Powder Plasma Spraying for AlSi9Cu3 (Fe) Alloy

Abstract:

In this paper, the surface modification for Al alloy cylinder block (AACB) was investigated in order to improve the surface properties of AACB inner wall. It is found that the laser roughing process can increase the contact area, thereby modifying the morphology of the interface between layer and matrix and improving obviously the bonding force. The properties, including strength, hardness, heat resistance and wear resistance, were improved mainly due to the Fe-based powder plasma spraying process. Owing to the combination of laser roughing and plasma spraying, low porosity of the layer was obtained, enabling the surface to hold a certain amount of lubricating oil, leading to the improvement in engine performance. Via the analysis of microstructure, hardness, mechanical properties and machining dimension, it is suggested that the combination of laser roughing and plasma spraying can act as a feasible way to tailor the properties of surface layer and provide great potential to improve the practical applications of AACB in the field of automotive industry.

• Periodical: Materials Science Forum (Volume 1067)
• Pages: 17-26
• DOI: https://doi.org/10.4028/p-p00d5p
• Online since: August 2022
• Authors: Li Jun Han*, Jun Jie Zhu, Yu Bo Chen
• Keywords: Al. Alloy, Cylinder Block, Laser Roughing, Mechanical Properties, Microstructure, Plasma Spraying, Quality Check

References

[1] H W Zhao et al., A Review of Automotive Lightweight Technology[C]//Proceedings of 2nd International Conference on Mechanical, Electronic, Control and Automation Engineering (MECAE 2018),2018:46-49.

DOI: 10.2991/mecae-18.2018.10

[2] M X Zhang et al. Thermo-mechanical fatigue property and life prediction of vermicular graphite iron[J]. Materials Science & Engineering A, 2017, 698: 63-72.

DOI: 10.1016/j.msea.2017.05.035

[3] C P Jiang et al., Wear Resistance and Bond Strength of Plasma Sprayed Fe/Mo Amorphous Coatings [J]. Journal of Iron and Steel Research (International), 2014, 21(10):969-974.

DOI: 10.1016/s1006-706x(14)60170-9

[4] V Hutsaylyuk et al., Improvement of wear resistance of aluminum alloy by HVOF method [J]. Journal of Materials Research and Technology, 2020, 9(6):16367-16377.

DOI: 10.1016/j.jmrt.2020.11.102

[5] V Hutsaylyuk et al., The properties of oxide-ceramic layers with Cu and Ni inclusions synthesizing by PEO method on top of the gas-spraying coatings on aluminum alloys [J]. Vacuum, 2020 (179).

DOI: 10.1016/j.vacuum.2020.109514

[6] Z R Li et al., Study on the Microstructure and Properties of Iron-Based Wear-Resistant Coating on the Inner Wall of an Al. Cylinder Block [J]. Key Engineering Materials, 2016, 4274(703-703): 119-122.

DOI: 10.4028/www.scientific.net/kem.703.119

[7] G Barbezat, Advanced thermal spray technology and coating for lightweight engine blocks for the automotive industry [J]. Surface & Coatings Technology. 2005 (5).

DOI: 10.1016/j.surfcoat.2005.08.017

[8] P Chao, Y Z JIANG et al., Wear Resistance and Bond Strength of Plasma Sprayed Fe/Mo Amorphous Coatings [J]. Journal of Iron and Steel Research (International), 2014, 21(10):969-974.

DOI: 10.1016/s1006-706x(14)60170-9

[9] C N Zhang et al., Application of Laser Processing Technology in Metallurgical Industry [J]. China Metal Bulletin, 2020(01):7+9.

[10] W Zhang et al., Application and development trend of thermal spraying technology in product remanufacturing [J]. China surface engineering, 2011, 24(06):1-10.

[11] C Brecher et al. Laser Roughing of PCD [J]. Physics Procedia, 2014, 56(C): 1107-1114.

DOI: 10.1016/j.phpro.2014.08.024

[12] J X Bi, et al. Influence of the Laser Roughing Technology on the Microstructure and Properties of C/SiC-TC4 Brazed Joints[C], 2014 International Conference on Brazing, Soldering and Special Joining Technologies Proceedings,2014:279-283.

[13] X Chen et al. Evolution of laser burring pit morphology on 3A21 Al. alloy [J]. laser & optoelectronics Progress, 2019, 56(24):173-180.

[14] M B Nandakumar et al., Experimental investigation of the effect of laser texturing on the used IC Engine Piston skirt [J]. Materials Today: Proceedings, 2018, 5(1): 2773-2780.

DOI: 10.1016/j.matpr.2018.01.064

[15] S P Divyansh et al. Topographical effects of laser surface texturing on various time-dependent wetting regimes in Ti6Al4V [J]. Surface & Coatings Technology, 2018, 349: 816-829.

DOI: 10.1016/j.surfcoat.2018.05.032

[16] L Romoli, F Moroni et al., A study on the influence of surface laser texturing on the adhesive strength of bonded joints in Al. alloys [J]. CIRP Annals - Manufacturing Technology, 2017, 66(1): 237-240.

DOI: 10.1016/j.cirp.2017.04.123

[17] Z R Li, Preparation and tribological properties of Iron based coating on Inner Wall of Al. Internal Combustion Engine block [D]. Shenyang University of Technology, (2016).