밀폐 금형 알루미늄 온간 단조 공정을 이용한 수소 연료전지 자동차용 전·후방 보스 개발에 관한 연구
A Study on the Development of Forward and Rear Bosses for a Hydrogen fuel cell vehicles Using a Closed-Die Aluminium Warm Forging Process
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This study presents the development of high-performance front and rear boss components for hydrogen fuel cell vehicles through a closed-die aluminum warm forging process, employing AI6061 alloy. The research emphasizes the design and optimization of closed-dies to ensure superior material utilization, dimensional accuracy, and structural integrity. Finite element analyses were conducted to investigate metal flow behavior and forging pressures, corroborating the experimental results obtained under controlled warm forging conditions. The mechanical characterization, including tensile and yield strength evaluations, demonstrated significant enhancements in material properties, attributable to microstructural refinement and the uniform distribution of the β' phase precipitate during T6 heat treatment. Thermal shock testing under extreme cyclic temperature variations confirmed the structural stability and reliability of the forged components. The findings highlight the efficacy of the closed-die warm forging process in achieving high strength-to-weight ratios, critical for hydrogen storage systems, and contribute valuable insights to the advancement of lightweight, high-durability automotive components for sustainable mobility.
Abstract
This study presents the development of high-performance front and rear boss components for hydrogen fuel cell vehicles through a closed-die aluminum warm forging process, employing AI6061 alloy. The research emphasizes the design and optimization of closed-dies to ensure superior material utilization, dimensional accuracy, and structural integrity. Finite element analyses were conducted to investigate metal flow behavior and forging pressures, corroborating the experimental results obtained under controlled warm forging conditions. The mechanical characterization, including tensile and yield strength evaluations, demonstrated significant enhancements in material properties, attributable to microstructural refinement and the uniform distribution of the β' phase precipitate during T6 heat treatment. Thermal shock testing under extreme cyclic temperature variations confirmed the structural stability and reliability of the forged components. The findings highlight the efficacy of the closed-die warm forging process in achieving high strength-to-weight ratios, critical for hydrogen storage systems, and contribute valuable insights to the advancement of lightweight, high-durability automotive components for sustainable mobility.
참고문헌 (12)
- Free Piston Engine Its Application and Optimization, "M. Goretz", SAE, ~, pp.Vol. 1 (2000)
- Moghbelli, H., "A comparative Review of Fuel Cell Vehicles and Hybrid Electric Vehicles", SAE Transactions, 112 (2003)
- National Fire Research Institute, "Electric Vehicle Fire Response Guide", 1~72 (2023)
- Chung, Y. H., "Development Status of Hydrogen Fueling Protocol for International Standard", The Research Institute for Engineering & Technology Hoseo University, 40, pp.59~66 (2021)
- Bang, W., "The Effect of Deformation Heat Compensation in the Hot Forging Analysis of SAF 2507 Stainless Steel", Transactions of Materials Processing, 10, pp.206~213 (2001)
- Lee, J. H., "Evaluation of Mechanical Property and Microstructure of Forged and T6-treated 6061 Aluminum Alloy Wheel", Transactions of Materials Processing, 16, pp.354~359 (2007)
- Kwon, Y. N., "The Study on the Hot Forging of a Extruded and Continuously Cast Al 6061", The Korean Society for Technology of Plasticity and materials processing, proceeding of the spring conference, pp.80~83 (2003)
- Mungole, T., "A critical examination of the paradox of strength and ductility in ultra fine-grained metals", Journal of Materials Research, 29, pp.2534~2546 (2014)
- Kumar, P., "Review : Overcoming the paradox of strength and ductility in ultrafine-grained materials at low temperatures", Journal of materials science, 51, pp.7~18 (2016)
- Kwon, O. H., "Forging Effect of Al6061 in Casting", Forging Process, 2005, pp.22, 45~50
- Park, C., "Mechanical Properties of Hot-forged Al 6061-T6", Korean Journal of Materials Research, 13, pp.374~380 (2003)
- Ramesh, C. S., "Influence of forging on mechanical properties of Ni-P coated Si3N4 reinforced Al6061 composites", Materials science & engineering. properties, microstructure and processing. A, Structural materials, 551, pp.59~66 (2012)