1Vijaya Krishna Institute of Technology & Sciences, Palamakula(V), Shamshabad(M) Ranga Reddy District, 501 218, Andhra Pradesh, India.
2Mechanical Engineering Wing, Defense Electronics Research Laboratory, Hyderabad, 500 005, India.
3All India Society for Technical Education, New Delhi, India.
In this work the authors have studied the improvement in wear resistance of D2 tool steel by Cryogenic Treatment. The material is tested for improvement in abrasive wear resistance by treating cryogenically at different temperatures below 0°C. All the specimens are first heat treated as per standard norms and re tempered after Cryogenic treatment. The specimens are treated at −40°C, −78°C, −150°C and at −190°C. Abrasive wear tests are conducted using Pin-on-Disk test apparatus. The wear resistance of cryogenically treated specimen is compared with normal heat treated specimen by taking the wear rate of normal heat treated specimen as reference of 100%. Microstructures of all specimens are recorded to analyze the mechanism that contributes for wear resistance improvement. It is observed that the wear resistance has been improved up to 353%.
