TY - JOUR

T1 - Determination of the degree of recrystallization of a microalloyed HSLA steel by using metallographic methods

AU - Monschein, Stefan

AU - Kostwein, Nikolaus

AU - Ragger, Katharina

AU - Zügner, Dominik

AU - Fasching, Josef

AU - Schnitzer, Ronald

N1 - Publisher Copyright: © 2022 Walter de Gruyter GmbH, Berlin/Boston, Germany.

PY - 2022/6/30

Y1 - 2022/6/30

N2 - On the one hand, this work aims at describing the grain elongation of compressed samples of a microalloyed high-strength steel using appropriate parameters. On the other hand, the degree of recrystallization is to be determined based on the samples' grain elongation. For this purpose, single-hit compression tests were performed with varying test parameter settings using a deformation dilatometer to generate samples characterized by various degrees of recrystallization. Three parameters were chosen to describe the grain elongation. It was found that the parameter defining the ratio length/ width of the original grain provides the highest sensitivity regarding changes in the grain elongation. Aiming at determining the degree of recrystallization, a critical grain elongation threshold value was determined below which it is assumed that a grain is recrystallized. The results show that choosing the right threshold value allows an automated determination of the degree of recrystallization of a microalloyed high-strength steel in the light microscope.

AB - On the one hand, this work aims at describing the grain elongation of compressed samples of a microalloyed high-strength steel using appropriate parameters. On the other hand, the degree of recrystallization is to be determined based on the samples' grain elongation. For this purpose, single-hit compression tests were performed with varying test parameter settings using a deformation dilatometer to generate samples characterized by various degrees of recrystallization. Three parameters were chosen to describe the grain elongation. It was found that the parameter defining the ratio length/ width of the original grain provides the highest sensitivity regarding changes in the grain elongation. Aiming at determining the degree of recrystallization, a critical grain elongation threshold value was determined below which it is assumed that a grain is recrystallized. The results show that choosing the right threshold value allows an automated determination of the degree of recrystallization of a microalloyed high-strength steel in the light microscope.

UR - http://www.scopus.com/inward/record.url?scp=85133558234&partnerID=8YFLogxK

U2 - 10.1515/pm-2022-1007

DO - 10.1515/pm-2022-1007

M3 - Article

VL - 59.2022

SP - 317

EP - 339

JO - Practical metallography = Praktische Metallographie

JF - Practical metallography = Praktische Metallographie

SN - 0032-678X

IS - 6

ER -