Effects of predeformation and semi-solid processing on microstructure and mechanical properties of Cr–V–Mo steel

Microstructural evolution during partial melting and semisolid forming behaviors of two hot-rolled Cr–V–Mo tool steels

“…According to Meng et al (2013), the austenization and dissolution of carbides occur when the temperature of a ferrous alloy exceeds its A3 temperature. Owing to the phase transformation from body-centered cubic (BCC) to face-centered cubic (FCC) during the austenization, more positions are provided for carbon atoms.…”

“…8 and 9b, respectively. According to Meng et al (2013), the grain growth of reheated SKD61 tool steel is affected by the heating conditions. A lower heating rate and longer heating time result in a larger grain size.…”

Microstructure of Cr–V–Mo Steel Processed by Recrystallization and Partial Melting and Its Effect on Mechanical Properties

“…RAP experiments were conducted using a multistage hot compression testing machine, which was used in our previous investigations. 7,16) Schematic diagrams of the RAP experimental setup and the dimensions of the dies are shown in Fig. 1.…”

“…Consistent with our previous description, the alloying elements were mainly distributed in the finer liquid-phase network. 16) Thus, the high cooling rate during casting resulted in a finer RAPprocessed microstructure and a more homogeneous distribution of the alloying elements. 3.2 Microstructural evolution during post heat treatment The aim of post heat treatment is to cause the evolution of the microstructure and homogenize the distribution of alloy elements in RAP-processed specimens.…”

Controlled Semisolid Forging of Aluminium Alloys Using Mechanical Servo Press to Manufacture Products with Homo- and Heterogeneous Microstructures

“…The best combination of the above two characteristics, namely, short process chain and wide range of capability in product property control, is a large field of research and development, as was demonstrated in the tool steel production process. 2) Several investigations have been carried out in response to the above demand in ferrous and nonferrous alloys. Alloys prepared by RAP or other fabrication methods contain a nondendritic microstructure with adjustable morphology 3) and even exhibit adjustable fluidity and formability in the semisolid state.…”