Mechanical Behavior of Carbon Steels in the Temperature Range of Mushy Zone.

Abstract

Fig. 9. Schematic diagram of dendritic solidification assuming that the secondary dendrite arms have sine profiles.

High Temperature Deformation Behavior of Peritectic Carbon Steel during Solidification.

“…Many researchers [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] have studied tensile strength and elongation because the high temperature physical properties of carbon steel were necessary for prediction and control of the stress in the solidified shell.…”

Modeling and Optimization of Direct Chill Casting to Reduce Ingot Cracking

“…The formation of hot tears is closely related to the mechanical properties of the alloy at small liquid fractions in the mushy zone [23][24][25][26][27][28][29][30][31]. The common approaches for measuring the mechanical properties of alloys at mushy zone temperatures include the heating method [24][25][26] and the solidification method [27][28][29][30][31]. The most widely used method is the heating method, which involves heating a specimen to the desired mushy zone temperature, holding the specimen at the test temperature for a certain amount of time to obtain a uniform temperature distribution in the gauge length of the specimen, and then measuring the properties.…”

“…Usually, the mushy zone in an alloy is in nonequilibrium during solidification, and hot tearing occurs at small liquid fractions (<0.1) [30]. Duncan, Han, and Viswanathan [32] demonstrated that the liquid fraction decreases rapidly when a specimen is held at mushy zone temperatures due to back diffusion in the solid.…”

“…The solidification method involves cooling a specimen from liquid to solid in a mold and measuring the mechanical properties of the alloy during cooling [27][28][29][30][31]. It can be used for measuring mechanical properties in the nonequilibrium mushy zone, but its accuracy is influenced by interactions between the specimen and the mold and by the non-uniform temperature distribution in the specimen.…”

Heating Simulation of Tensile Specimen at Continuous Casting Temperatures

“…In order to improve the quality of the slab, the stress-strain behavior of the slab at high temperature should be studied to obtained its high temperature mechanical properties. Because the temperatures involved are quite high, many researchers tend to use the Gleeble test machine to carry out the tensile test [1][2][3][4][5]. Unfortunately, the specimen's temperature after heating is not uniform in Gleeble, which will have a huge impact on the tensile test.…”