Influence of varying aluminum contents on the hot ductility of medium manganese steels

Daniel David; Reinhold Schneider; Christof Sommitsch; Gerald Klösch

doi:10.1177/02670836261445687

Influence of varying aluminum contents on the hot ductility of medium manganese steels

Daniel David^*
, Reinhold Schneider
, Christof Sommitsch
, Gerald Klösch

^*Korrespondierende/r Autor/-in für diese Arbeit

Research Center Wels

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

Abstract

The influence of aluminum nitride (AlN) precipitation on the hot ductility of medium manganese steels was investigated
using hot tensile testing, as good hot ductility is essential for continuous casting. A reasonable hot ductility is reached
up to 0.04% and at 1.6% aluminum. At 0.04% only few AlN precipitates due to slow kinetics. At 1.6%, coarse AlN precipitates
at high temperatures, minimally affecting hot ductility. In contrast, 0.6% aluminum leads to significant ductility loss
due to AlN precipitating at γFe grain boundaries. At 1% aluminum, higher nitrogen contents only slightly reduce hot ductility.
Thus, hot ductility is mainly influenced by AlN precipitation from γFe. SEM-EDX analysis confirmed that fine AlN at γFe
grain boundaries correlate with poor hot ductility.

Originalsprache	Englisch
Aufsatznummer	0
Seiten (von - bis)	1-12
Seitenumfang	12
Fachzeitschrift	Materials Science and Technology (United Kingdom)
Jahrgang	2026
DOIs	https://doi.org/10.1177/02670836261445687
Publikationsstatus	Veröffentlicht - 11 Apr. 2026

Schlagwörter

medium-manganese steel
hot ductility
aluminum nitride precipitation
hot tensile test
continuous casting

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title = "Influence of varying aluminum contents on the hot ductility of medium manganese steels",

abstract = "The influence of aluminum nitride (AlN) precipitation on the hot ductility of medium manganese steels was investigated using hot tensile testing, as good hot ductility is essential for continuous casting. A reasonable hot ductility is reached up to 0.04\% and at 1.6\% aluminum. At 0.04\% only few AlN precipitates due to slow kinetics. At 1.6\%, coarse AlN precipitates at high temperatures, minimally affecting hot ductility. In contrast, 0.6\% aluminum leads to significant ductility loss due to AlN precipitating at γFe grain boundaries. At 1\% aluminum, higher nitrogen contents only slightly reduce hot ductility. Thus, hot ductility is mainly influenced by AlN precipitation from γFe. SEM-EDX analysis confirmed that fine AlN at γFe grain boundaries correlate with poor hot ductility.",

keywords = "medium-manganese steel, hot ductility, aluminum nitride precipitation, hot tensile test, continuous casting, aluminum nitride precipitation, continuous casting, hot ductility, hot tensile test, medium-manganese steel",

author = "Daniel David and Reinhold Schneider and Christof Sommitsch and Gerald Kl{\"o}sch",

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AU - Schneider, Reinhold

AU - Sommitsch, Christof

AU - Klösch, Gerald

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PY - 2026/4/11

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N2 - The influence of aluminum nitride (AlN) precipitation on the hot ductility of medium manganese steels was investigated using hot tensile testing, as good hot ductility is essential for continuous casting. A reasonable hot ductility is reached up to 0.04% and at 1.6% aluminum. At 0.04% only few AlN precipitates due to slow kinetics. At 1.6%, coarse AlN precipitates at high temperatures, minimally affecting hot ductility. In contrast, 0.6% aluminum leads to significant ductility loss due to AlN precipitating at γFe grain boundaries. At 1% aluminum, higher nitrogen contents only slightly reduce hot ductility. Thus, hot ductility is mainly influenced by AlN precipitation from γFe. SEM-EDX analysis confirmed that fine AlN at γFe grain boundaries correlate with poor hot ductility.

AB - The influence of aluminum nitride (AlN) precipitation on the hot ductility of medium manganese steels was investigated using hot tensile testing, as good hot ductility is essential for continuous casting. A reasonable hot ductility is reached up to 0.04% and at 1.6% aluminum. At 0.04% only few AlN precipitates due to slow kinetics. At 1.6%, coarse AlN precipitates at high temperatures, minimally affecting hot ductility. In contrast, 0.6% aluminum leads to significant ductility loss due to AlN precipitating at γFe grain boundaries. At 1% aluminum, higher nitrogen contents only slightly reduce hot ductility. Thus, hot ductility is mainly influenced by AlN precipitation from γFe. SEM-EDX analysis confirmed that fine AlN at γFe grain boundaries correlate with poor hot ductility.

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