We investigate regularities of deformation behavior and acoustic emission in AMg6 alloy under thermomechanical loading performed by method of cycles. The loading in a cycle is carried out by non-isothermal, continuous heating from 25°C up to 500°C. Mechanical stress in the cycle remains constant with further 10 MPa increase in a subsequent cycle. We provide a real-time recording of values of the following quantities: Vrms acoustic emission (μv); strain (%); temperature (T). We demonstrate that under complex thermomechanical loading, features of AMg6 alloy deformation behavior manifest themselves in two temperature intervals characterized by different strain rates. In the low-temperature area, the accumulation of low rate strain corresponds to monotonous low-amplitude acoustic emission. It indicates a low correlation of elementary deformation acts. In the high-temperature area, rapid accumulation of strain corresponds to fast monotonous growth of high-amplitude acoustic emission that leads to a global macro-jump. Such deformation behavior indicates a high correlation of elementary deformation acts.