Hot deformation characterization of as-homogenized Al-Cu-Li X2A66 alloy through processing maps and microstructural evolution

Hot Deformation Analysis and Microstructure Evolution of a Novel Al–Cu–Li Alloy by Isothermal Compression

“…It has been shown that [31] the relationship between logσ and logε : can be expressed as a third-order polynomial shown in Equation (15), and then the value of m can be calculated from Equation ( 16) and the fitting results of Figure 4.…”

“…In addition to constitutive models, the hot processing map is widely used for analyzing thermal deformation behavior. [ 13–15 ] It combines a power dissipation map and an instability map to better visually distinguish different thermal deformation regions and better predict the final microstructure of the alloy. Since the variation law of the true stress–strain curves is similar for most Al–Li alloys during hot deformation processes, the basic characteristics of hot processing maps based on them are similar.…”

“…[8][9][10][11] In addition to constitutive models, the hot processing map is widely used for analyzing thermal deformation behavior. [13][14][15] It combines a power dissipation map and an instability map to DOI: 10.1002/adem.202201884…”

Flow behavior and microstructure evolution of Al-3.65Cu-0.98Li (wt%) alloy during hot deformation

“…Instability map identifies the stable or unstable microstructure evolutions by the instability criterion calculated from flow stress. It has been proved to be efficient in characterizing titanium alloy, aluminum alloy and ultra-high strength steel, etc [15][16][17]. Power dissipation map also recognizes the potential microstructure evolutions by the range of power dissipation efficiency (PDE) value.…”

Mechanisms and microstructures of 2A97 Al‐Li alloy under the hot forming with synchronous quenching process

“…Al‐Li alloys own low density, high elastic modulus, high specific strength, and superior comprehensive performance, which have been extensively applied to aircraft, aerospace components, and military applications (Abd el‐Aty et al, 2018; Gupta, Nayan, Nagasireesha, & Sharma, 2006; Jia, Ren, Hou, & Zhang, 2019; Zhong, Gao, Feng, Lu, & Zhu, 2019). Furthermore, Al‐Li alloys are expected to take over from the conventional 2000 and 7,000 series high strength Al alloys (Gupta et al, 2006; Jia et al, 2019; Zhong et al, 2019). At present, the third‐generation 2A97 Al‐Li alloy, an Al‐Cu‐Li alloy is newly developed by China.…”