Effect of Grain Boundary Formation in Microstructural Changes in IN 738 Service Exposed Turbine BladeAfolabi Lukmon Owolabi, Puteri Sri Melor Megat-Yusoff, Norlaili Amir, M.S. Jasmani and S.M.A. Syed Ahmad GhazaliMATEC Web Conf., 225 (2018) 05022DOI: https://doi.org/10.1051/matecconf/201822505022