In the recent years, globalization prepared a ground for English to be the lingua franca of the academia. Thus, most highly prestigious international journals have defined their medium of publications as English. However, even advanced language learners have difficulties in writing their research articles due to the lack of appropriate lexical knowledge and discourse conventions of academia. Considering the fact that the underuse, overuse and misuse of formulaic sequences or lexical bundles are often characterized with non-native writers of English, lexical bundle studies have recently been on the top of the agenda of corpus studies. Although the related literature has represented specific genres or disciplines, no study has scrutinized lexical bundles in the research articles that are written in the educational sciences. Therefore, the current study compared the structural and functional characteristics of the lexical-bundle use in L1 and L2 research articles in English. The results revealed the deviation of the usages of lexical bundles by the non-native speakers of English from the native speaker norms. Furthermore, the results indicated the overuse of clausal or verb-phrase based lexical bundles in the research articles of Turkish scholars while their native counterparts used noun and prepositional phrase-based lexical bundles more than clausal bundles.