How may the problem be resolved if carbides are generated on the grain boundaries of sintering-prepared H13 alloy and the elongation is less than 5%?
Must re-solution carbides at very high temperature ~1300 °C and quench and re-precipitate by reheating around 700°C adjusting time to get what carbide distribution you need.
The process for obtaining details by sintering H13 steel is known and studied by many authors. The problem is actually getting a porous structure. It depends on the size of the particles in pre-prepared and sifted dust particles. In addition, the tendency to form carbides according to the heat treatment regime also affects the technological and mechanical properties. As the tensile strength increases, the plasticity decreases and vice versa. A compromise is sought according to one of the sought indicators. it is achieved by means of a well-prepared mixture with a certain size of dust particles and a suitable mode of heating and subsequent firing. I agree with Edward Vojcak suggested directions. But field experiments should be conducted to achieve the desired properties by adjusting the heat treatment times. Good luck in your research.
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