An overview of thixoforming process

4th International Conference on Mechanical Engineering Research

Husain, N.H.^1 ; Ahmad, A.H.^1 ; Rashidi, M.M.^1

Faculty of Mechanical Engineering, Universiti Malaysia Pahang, Pekan

26600, Malaysia^1

关键词: Die temperatures;    Material behaviour;    Micro-structure evolutions;    Pouring temperatures;    Product characteristics;    Rheological behaviour;    Shrinkage and porosities;    Thixoforming process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/257/1/012053/pdf
DOI  :  10.1088/1757-899X/257/1/012053

来源: IOP

【 摘 要 】

Thixoforming is a forming process which exploits metal rheological behaviour during solidus and liquidus range temperature. Many research works in thixoforming are currently focusing on the raw material used to produce superior mechanical properties and excellent formability components, especially in automotive industries. Furthermore, the thixoforming process also produced less casting defect component such as macrosegration, shrinkage and porosity. These advantages are sufficient to attract more exploration works of thixoforming operation. However, the weakness of this process such as high production cost due to leftover billet which cannot be recycled, encourage researcher works to overcome thixoforming limitations by using various methods. The thixoforming methods that widely used are thixocasting, thixoforging, thixorolling, thixoextrusion and thixomoulding. Each method provides varieties of final product characteristics; hence offer the extensive possibility of component invention. On the other hand, new thixoforming method leads to exploration research such as microstructure evolution, heating and pouring temperature, die temperature, mechanical properties, viscosity and final product quality. This review paper presents findings in the rheological material behaviour of thixoforming, advantages and disadvantanges of thixoforming, parameters affecting the thixoforming operation, morphology of thixoforming and various methods which have been used in this research area.