Method for preparing high-toughness heterogeneous nickel by regulating and controlling rolling and annealing process

• Main Authors: YANG LIANG, CHEN ZHUO, MA XINKAI, LUO SHENGNIAN
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for preparing high-toughness heterogeneous nickel by regulating and controlling a rolling and annealing process, which comprises the steps of repeatedly rolling a coarse-grain pure nickel plate at room temperature, cutting a dog bone tensile sample on the rolled plate, polishing the sample by using a polishing machine after polishing the sample, annealing the sample for 1-10 minutes at the temperature of 510-650 DEG C, stretching the prepared heterogeneous nickel on the stretching machine at the strain rate of 1 * 10 <-3 > s <-1 >, enabling a sample subjected to stretching deformation to be ground through abrasive paper and then polished through a polishing machine, and finally electrolyzing the sample. According to the method, the heterostructure material with excellent matching strength and ductility can be obtained, the defects that coarse grains are low in strength and ultra-fine grains and nanocrystalline are low in ductility are balanced, and heterostructure textures wit