Study on the As-Cast Microstructure and Homogenization Mechanism of GH3128 Superalloy

Guo, Xulong; Zhang, Yang; Qi, Helena W.; Tang, X.

doi:10.1007/s11665-023-08107-w

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Therefore, the homogenization HT temperature should be determined according to the degree of oxidation and the effect of the Fe content deviation. Both HT temperature and time have significant effect on the homogenization of alloys [39,40]. Increased homogenization treatment temperature and extended holding time can significantly alleviate the segregation of the alloying element [41].…”

Section: Sample#mentioning

confidence: 99%

“…However, in actual industrial production of Ti-1023, the oxidation of the ingot d the HT process would cause the loss of the metal and reduce the yield of the Ti Therefore, the homogenization HT temperature should be determined according degree of oxidation and the effect of the Fe content deviation. Both HT temperature and time have significant effect on the homogenizat alloys [39,40]. Increased homogenization treatment temperature and extended ho time can significantly alleviate the segregation of the alloying element [41].…”

Section: Sample#mentioning

confidence: 99%

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Effects of Homogenization Heat Treatment on the Fe Micro-Segregation in Ti-1023 Titanium Alloy

et al. 2023

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The segregation of the Fe element in Ti-10V-2Fe-3Al titanium alloy (Ti-1023) can lead to the generation of beta flecks, which seriously affects the performance of Ti-1023 products. During the heat treatment (HT) process at a high temperature, the Fe element in Ti-1023 ingots will migrate, making its distribution more uniform and reducing the segregation index. In this paper, the control of Fe micro-segregation in Ti-1023 ingots by homogenization HT was investigated. Firstly, dissection sampling and SEM-EDS analysis methods were used to study the distribution pattern of the Fe element in the equiaxed grains in the core of Ti-1023 ingots. It was found that the Fe content in the grain gradually increased along with the radial direction from the core to the grain boundary. Then, the homogenization HT experiments and numerical simulations of Ti-1023 at different HT temperatures from 1050 °C to 1200 °C were carried out. The results showed that the uniformity of Fe element distribution within grain can be significantly improved by the homogenization HT. With increasing HT temperature, Fe atoms migration ability increases, and the uniformity of Fe element distribution improves. Homogenization HT at 1150 °C and 1200 °C for 12 h can effectively reduce the degree of Fe element segregation.

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Section: Sample#mentioning

confidence: 99%