Mechanical Properties and Fracture Mechanism of Selective Laser Melting Manufactured Nickel-Based Alloy by Small Punch Test Over a Wide Temperature Range.

The high-temperature mechanical properties and fracture mechanism of selective laser melting (SLM) manufactured nickel-based alloy are highly important for its application. In this article, small punch test (SPT) method is used to study the mechanical properties of SLM-manufactured GH4169 over a wide temperature range from 25°C to 600°C. With the increase of temperature, the decreasing ratio of maximum load is only 18.