Prediction of Surface Crack in Hot Forging by Numerical Simulation

Kakimoto, Hideki; Arikawa, Takefumi

doi:10.1016/j.proeng.2014.10.025

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…In order to incorporate temperature and strain rate, DF2016 was redefined as equation (7). The ( )  e f T, ln is obtained through surface fitting based on the data in table 7, and the expression is as shown in equation (7), the fitting surface graph as shown in figure 13. The e sf represents the fracture strain of T1 under 800 °C and a strain rate of 0.01 S −1 .…”

Section: Construction and Validation Of Fracture Criteria 431 Constru...mentioning

confidence: 99%

“…Forging is an advanced shaping process that can produce near-net-shape product and enhance the mechanical properties of alloys, and it is widely employed in aerospace and other related industries [4,5]. However, the window for titanium alloy forging process is narrow, considering the cooling effect of the mold, the damage evolution on the surface of titanium alloy forgings under high temperature conditions becomes more complex, making it difficult to achieve accurate predictions [6,7]. After the occurrence of surface cracks, not only will substantial time be expended on the process of polishing, but it will also result in a diminishment of product quality and production efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Prediction of ductile cracking in the titanium alloy forging process

Fan,

Zhang,

Yuan

2024

Mater. Res. Express

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The control of surface cracking in the forming of titanium alloy forgings is a significant problem in the forging industry. For titanium alloys, the formation of surface cracks is related to temperature, strain rate, and stress state. This study selected the widely used medium to high strength titanium alloy Ti-6Al-4V in the field of forging as the research material, and designed six different shapes of specimens for high-temperature tensile and compression tests. The mechanisms underlying crack formation were analyzed at the microscopic level, and the critical fracture displacement of these tests was extracted. Moreover, their critical fracture strains were obtained through simulations, and a High-temperature damage model was established based on the DF2016 model. The research results showed that cracks through void at grain boundaries propagate and aggregate to form, leading to a fracture mechanism characterized by ductile fracture through micro-pore aggregation. Simulation results demonstrate that the established model accurately predicts the crack of forgings.

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Section: Construction and Validation Of Fracture Criteria 431 Constru...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Prediction of ductile cracking in the titanium alloy forging process

Fan,

Zhang,

Yuan

2024

Mater. Res. Express

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“…To simulate the metal plastic forming process using a computer becomes a very effective way to improve the scientific basis of forming design. It may provide a means of substituting traditional preform design methods, effectively improving the level of forging-die design and controlling the quality of products through optimization of the process parameters [4,[7][8][9][10]. Optimization of the forging processes with numeric simulation has been talked about in numbers of research studies [5,6,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of hot forging process in production of axisymmetric automobile parts

Bašić¹,

Duharkic²,

Burak³

2019

PEN

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The fin ite element method were used for the plastic metal flo w predict ion of ring shaped parts. Various parameters that affect the forging operation are the material characteristics like material strength, ductility, deformat ion rate, temperature sensitivity and frict ional characteristics of the workp iece, prefo rm design, die design and die material. Nu merical simulat ion has been done for axisy mmetric automobile parts. The procedure of nu merical modeling contains all simulat ions phases like the movement of p reform fro m inductor to the tool, placement and setting of preform piece inside the tool before the blow in order to get as good result as possible. These techniques are used to reduce the amount of input material for forgings, extend the lifetime of fo rging dies, and prevent defects in forged components.

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Developing Molds to Increase the Production Process of Automotive Parts in the Hot Forging Process Using the Finite Element Method

Asavarutpokin,

Chaijit

2024

Lecture Notes in Networks and Systems

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Prediction of Surface Crack in Hot Forging by Numerical Simulation

Cited by 8 publications

References 4 publications

Prediction of ductile cracking in the titanium alloy forging process

Prediction of ductile cracking in the titanium alloy forging process

Numerical simulation of hot forging process in production of axisymmetric automobile parts

Developing Molds to Increase the Production Process of Automotive Parts in the Hot Forging Process Using the Finite Element Method

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