In this study, the microstructure and solidus and liquidus of several Ni-Co-Hf-Zr-Co-Ti-Al braze alloys were first examined with the objective to develop a B and Si free low melting braze alloy for narrow gap (NGB) and wide gap brazing (WGB) and repair applications. Among various alloys examined, DSC was used to measure the solidus and liquidus during heating and cooling cycles.