Semi-Solid Forging Process of Aluminum Alloy Connecting Rods for the Hydrogen Internal Combustion Engine
Source abstract
Abstract
As an important piece of equipment for hydrogen energy application, the hydrogen internal combustion engine is helpful for the realization of zero carbon emissions, where the aluminum connecting rod is one of the key core components. A semi-solid forging forming process for the 7075 aluminum alloy connecting rod is proposed in this work. The influence of process parameters, such as the forging ratio, sustaining temperature, and duration time, on the microstructures of the semi-solid blank is experimentally investigated. The macroscopic morphology, metallographic structure, and physical properties of the connecting-rod parts are analyzed. Reasonable process parameters for preparing the semi-solid blank are obtained from the experimental results. Under the reasonable parameters, the average grain size is 41.48~42.57 μm, and the average shape factor is 0.80~0.81. The yield strength and tensile strength improvement ratio of the connecting rod produced by the proposed process are 47.07% and 20.89%, respectively.
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Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Metallurgy and Material Forming · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
National Key Laboratory of Metal Forming Technology and Heavy Equipment, Xi’an 710049, China
Xi’an Key Laboratory of Intelligent Equipment and Control, Xi’an 710049, China
Wuhan Second Ship Design and Research Institute, Wuhan 430035, China
School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Funding
National Natural Science Foundation of China · Open Foundation of National Key Laboratory of Metal Forming Technology and Heavy Equipment
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