Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Haijiang Hu"'
Publikováno v:
Journal of Materials Research and Technology, Vol 29, Iss , Pp 1901-1910 (2024)
The correlation among isothermal transformation, interphase precipitation behaviour, and elements partitioning during isothermal heat treatment in a Ti–Mo microalloyed steel were investigated. The effect of isothermal holding temperature on the mic
Externí odkaz:
https://doaj.org/article/e29f3c724792403baa40f95d2e49b273
Publikováno v:
Materials, Vol 17, Iss 13, p 3236 (2024)
Previous studies on the austenite grain growth were mostly based on a fixed temperature, and the relationship between the austenite grain and austenitizing parameters was fitted according to the results. However, there is a lack of quantitative resea
Externí odkaz:
https://doaj.org/article/4540f7b933d44edf8d9868bb40c8664c
Publikováno v:
Metals, Vol 13, Iss 9, p 1526 (2023)
Since flow stress is an important parameter in the processing and application of metallic materials, it is necessary to trace the flow stress during austenite deformation. Thermal compression deformation of austenite in a high-strength bainitic steel
Externí odkaz:
https://doaj.org/article/f92467b3c8e0430dbf845f04b1cfd846
Publikováno v:
Metals, Vol 13, Iss 8, p 1422 (2023)
The carburizing period for tool steel could be significantly shortened by operating at a higher carburizing temperature. However, grain coarsening happens during the carburizing process, and then results in the deteriorated surface properties in 20Cr
Externí odkaz:
https://doaj.org/article/7abf5735cdc347d5b1ef1a3abe4cb216
Transformation kinetics of carbide-free bainitic steels during isothermal holding above and below MS
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 6, Pp 13594-13606 (2020)
The transformation kinetics of a low carbon bainitic steel was investigated using in situ confocal microscopy and dilatometry for isothermal treatments above and below the martensite start (MS) temperature. Both martensite and bainite are formed duri
Externí odkaz:
https://doaj.org/article/26ea3cdbdd1f469c97d1e6da504cec56
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 6, Pp 15750-15758 (2020)
Both ausforming and austempering below the martensite start temperature (MS) have been shown to accelerate the bainitic transformation. This work investigates the combined effects of deformation and austempering below the MS on the isothermal transfo
Externí odkaz:
https://doaj.org/article/d958e4bec43c492c97c54f27cf2a1092
Publikováno v:
Journal of Electrical and Computer Engineering, Vol 2020 (2020)
Filter model reduction is an important optimization method in digital signal processing. A method of FIR to FIR model reduction using SDP optimization is proposed in this paper. At first, we use SDP to design an original FIR filter. Then we name a ge
Externí odkaz:
https://doaj.org/article/ba039bedbdc74e308c9e2c5904884536
Publikováno v:
Metals, Vol 12, Iss 1, p 104 (2022)
The microstructure and wear performance of a low-carbon steel treated by austempering below and above martensite start temperature (Ms) were investigated. The results show that the bainite, fresh martensite (FM) and retained austenite (RA) were obser
Externí odkaz:
https://doaj.org/article/f427fe85a7154be095f5f4b230e32fd8
Publikováno v:
Metals, Vol 11, Iss 12, p 1959 (2021)
The effects of boro-austempering treatment on growth kinetics of borided layers, microstructure, and properties in a medium-carbon bainitic steel were investigated. The microstructure, distribution in coatings, corrosion, and wear properties of boro-
Externí odkaz:
https://doaj.org/article/333627f28be5465bae2dc9aadaea8354
Publikováno v:
Materials Research Express, Vol 7, Iss 1, p 016519 (2020)
It is commonly accepted that single ausforming with small strain at low temperature promotes isothermal bainite transformation and leads to more retained austenite. In the present study, the effects of two-step ausforming on the bainite transformatio
Externí odkaz:
https://doaj.org/article/ba9e5428ba5841e38e8e747c3ad9020c