You can go for following PG courses after graduation in Mechanical Engineering:

Mechanics


Mechatronics and robotics

Structural analysis

Thermodynamics and thermo-science

Design and drafting

Micro electro-mechanical systems (MEMS)

Friction stir welding (FSW)

Composites

Mechatronics

Nanotechnology

Finite element analysis

Biomechanics

Computational fluid dynamics

Acoustical engineering



You can also consider following programmes:

Mechanical Systems

University of Technology Troyes - UTT

Master Mechatronics

FOM Hochschule

Master in Materials Processes and Technology of Composites

Centrale Nantes

Master of Engineering in Mechanical Engineering

University of Maryland School of Engineering

MEng in Design and Development for Mechanical and Automotive Engineering

Esslingen University of Applied Sciences

Master in Mechatronics and Sensor Systems Technology

Vietnamese-German University

Master in Mechanical Engineering

Harbin Institute Of Technology

Master in Electronic and Mechanical Engineering (EME)

University of TOURS

Master Mobility and Electric Vehicles

ParisTech

Integrated Master's in Mechanical Engineering

University of Minho - School of Engineering