Testing method realizing integration of hot-working simulation and performance test

Abstract

The invention discloses a testing method realizing the integration of hot-working simulation and performance test. According to the invention, a lengthened and thickened simulation sample is used for simulating controlled rolling and controlled cooling processes; the simulation sample is processed along an axial direction, such that a standard impact sample used for an impact performance test is obtained; and the simulation sample is processed at an average temperature deformation zone along a radial direction into an I-shaped micro-tensile sample, and the sample is subjected to a normal-temperature tensile-performance test by using a matched micro-tensile fixture. Therefore, the integration of hot-working and performance test is realized. With the method provided by the invention, compared with the tensile test result of a standard sample, the data of the tensile test result of the method is relatively accurate, and the efficiency of the hot simulation test is greatly improved.

Description

technical field [0001] The invention belongs to the field of thermal simulation and performance testing of iron and steel materials, in particular to a test method capable of realizing the integration of thermal processing simulation and performance testing. Background technique [0002] The goal of controlled rolling and controlled cooling technology is to achieve grain refinement and fine grain strengthening, and to improve the structure and performance. To better achieve this goal, it is necessary to study the effects of various process parameters in the process of controlled rolling and controlled cooling on the microstructure and mechanical properties of steel. performance impact rules. The process of controlled rolling and controlled cooling in actual production has to go through the steps of billet heating-controlled rolling-controlled cooling-microstructure analysis-performance testing, etc. The cycle is long, and the controlled rolling process is affected by many fa...

AI Technical Summary

Problems solved by technology

The sample form used in the Gleeble-3500 simulated thermal processing process is usually Φ8×12mm, Φ10×15mm or Φ10×12mm. After the Gleeble-3500 thermal simulation, the sample form is only suitable for tissue observation and hardness testing. Samples and impact samples cannot be processed due to size limitations, so it is impossible to test the mechanical properties of samples after thermal simulation

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