Influence of material parameters on 2D-martensitic transformation based on the phase-field finite-element method

Abstract

Obtaining an accurate microscopic representation of the martensitic transformation process is key to realizing the best performance of materials and is of great significance in the field of material design. Due to the martensite phase transformation is rapidly, the current experimental is hard to capture all the information in the Martensite phase transformation process. Combining the phase-field method with the finite-element method, a model of martensitic transformation from a metastable state to a steady state is established. The law of a single martensite nucleus during martensitic transformation is accurately described. By changing the key materials that affect martensite transformation and the phase-field parameters, the effects of the parameters on the single martensitic nucleation process are obtained. This study provides an important theoretical basis for effectively revealing the essence of martensite transformation and can determine effective ways to influence martensite transformation, obtain the optimal parameters and improve the mechanical properties of such materials.

Design of Laser Quenching Equipment for Stainless Steel Dining Knife

“…Laser quenching is a heat treatment technique with the laser as a heat source, controlling the part of the laser scanning heat treatment to bringing the scanned area to 104~106 With the heating and cooling speed of ℃ / s, the solid phase transition is completed within 1 second to obtain the desired quenching effect [2]. Laser quenching has obvious advantages over conventional quenching [3][4][5]. Literature [6] discloses a quenching enhancement process of thin blade blade, indicating that the laser quenching of food-grade knife blade has entered the stage of industrial practice.…”