Influence of deformation on the Burgers orientation relationship between the α and β phases in Ti–5Al–5Mo–5V–1Cr–1Fe

Formation of slip bands and microstructure evolution of Ti-5Al-5Mo-5V-3Cr-0.5Fe alloy during warm deformation process

“…Moreover, the lattice defects introduced by deformation increase the number of nucleation sites and consequently raise the nucleation rate of the product phase. The morphology of precipitated α phase could be also changed during the hot deformation [30], even the orientation relationship between α/β phases (Burgers orientation relationship (BOR), i.e., {0001} α //{110} β , 〈112 ത 0〉 //<111> β [31]) could be destroyed [32]. the anvil and the specimen in order to reduce the relative friction between the two parts to enhance deformation homogeneity and also to prevent adhesion.…”

Microstructure and Crystallography of α Phase Nucleated Dynamically during Thermo‐Mechanical Treatments in Metastable β Titanium Alloy

“…[19] During further straining, however, the coherency of the interfaces is reduced due to the interaction of the boundaries with lattice dislocations. [23] The deviation would also increase with the deformation strain. [21] The study by He et al [22] indicated that external factors (strain, strain rate, and cooling rate) have a slight influence on the obeying of BOR during b !…”

An Overview of the Thermomechanical Processing of α/β Titanium Alloys: Current Status and Future Research Opportunities

“…A number of investigations of hot (and warm) working of a/b (and b) titanium alloys with a lamellar microstructure have verified the occurrence of the boundary-splitting mechanism and sought to quantify the evolution of sub-boundaries and the a/b interface energy. [76,[122][123][124][125][126][127][128][129][130][131] For example, EBSD measurements have shown that the formation of sub-boundaries in a lamellae increases with strain. [76,[123][124][125] In particular, sub-boundary misorientations of the order of 5°are developed after true strains of~0.30 and increase to~15°( or greater) by strains of~1.1 -1.3 in Ti64.…”

“…A similar conclusion regarding the evolution of the a/b interface during straining can be inferred from measurements of the deterioration in the Burgers orientation relation (BOR) between the a and b phases in the lamellar structure during straining. [124,130] Such changes may be thought of as an indirect indicator of the degree of local deformation at/near the interface. During warm working of Ti64 and Ti-5Al-5-Mo-5V-1Cr-1Fe (the latter b alloy chosen due to the retention of a large amount b phase at room temperature), for example, deviations between the Fig.…”