Microstructural development by electron irradiation in mechanical alloying processed Ti-Al intermetallic compounds

Deformation twinning in TiAl: Effects of defect clustering

“…(5), this unfaulting process requires nucleation of a Shockley loop of <112>/6 and its expansion across the original loop area. In the case of 7-TiAI of the Llo structure, no evidence of unfaulting of Frank loops had been obtained [46][47][48][49]. Rather, the Frank loops remained small in size without growing during irradiation, and some even shrank and disappeared.…”

“…While a large fraction of them are annihilated by mutual recombination, the rest form defect clusters, dislocation loops, and voids. In a ~{-TiA1 alloy, prismatic dislocation loops of the interstitial type were formed under electron-, ion-, and neutron-irradiation [46][47][48][49]. These loops are believed to be of Frank type with Burgers vectors of <111>/3 lying on {111} planes, and they are usually very small in size and hence difficult to analyze.…”

Microstructural design for thermal creep and radiation damage resistance of titanium aluminide alloys for high-temperature nuclear structural applications

“…Hence, most interest has been focused on the fully lamellar microstructure for high-temperature applications [12,13]. The irradiation behavior of TiAl alloys has also been partially investigated using various incident species including ion beams, electrons, protons and neutrons [14][15][16][17][18][19][20][21][22][23][24][25][26][27]. However, the effects of microstructural features on the irradiation behavior of these alloys have not yet been carried out.…”

Development and Irradiation Behavior of TiAl-Based Intermetallic Compounds

“…[1]. Recently, nuclear material application has also been considered, because it has elevated temperature strength, good aqua-corrosion resistance and low neutron-induced radioactivity, compared with those of conventional nuclear materials like austenitic stainless steels [2]. The main drawback for their engineering application is poor ductility at low to intermediate temperatures, though this is a common problem of intermetallic compounds.…”

“…Recently, a large progress in both ductility and strength has been found for triple-phase equiaxial alloys by using alloying methods [5]. While the irradiation damage studies have also been executed by using neutron-, ion-and electron-irradiation experiments for nuclear application [2,6,7], though there have been a few works.…”