TY - CHAP

T1 - Metastable–Stable

AU - Hort, Norbert

N1 - Conference code: 152

PY - 2023/2

Y1 - 2023/2

N2 - Most metallic materials are often cast. This is a highly dynamic process where composition and solidification conditions can become a challenge due to the appearance of porosity, shrinkholes, segregations, and the formation of intermetallic phases. Heat treatments are applied to get rid of segregations, stable, and metastable intermetallic phases for homogenization purposes and to obtain a material that is homogeneous with an adjustable property profile. However, often it is observed that the dissolution especially of metastable phases really takes long times (hundreds or even thousands of hours) and high temperature which is accepted in the academic world but not acceptable for real industrial applications due to time and costs. Especially for biodegradable metals, metastable phases perhaps could be regarded as “stable” when the time of absorption is in range of a few weeks only and could be used to adjust properties.

AB - Most metallic materials are often cast. This is a highly dynamic process where composition and solidification conditions can become a challenge due to the appearance of porosity, shrinkholes, segregations, and the formation of intermetallic phases. Heat treatments are applied to get rid of segregations, stable, and metastable intermetallic phases for homogenization purposes and to obtain a material that is homogeneous with an adjustable property profile. However, often it is observed that the dissolution especially of metastable phases really takes long times (hundreds or even thousands of hours) and high temperature which is accepted in the academic world but not acceptable for real industrial applications due to time and costs. Especially for biodegradable metals, metastable phases perhaps could be regarded as “stable” when the time of absorption is in range of a few weeks only and could be used to adjust properties.

KW - Cast/wrought processing

KW - Heat treatments

KW - Phase diagrams

KW - Stable/metastable phase

KW - Surface modification

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85159432985&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/fbe3452c-edec-39ed-9a48-abc2e0aaa654/

U2 - 10.1007/978-3-031-22645-8_3

DO - 10.1007/978-3-031-22645-8_3

M3 - Article in conference proceedings

AN - SCOPUS:85159432985

SN - 9783031226458

T3 - Minerals, Metals and Materials Series

SP - 11

EP - 13

BT - Magnesium Technology 2023

A2 - Barela, Steven

A2 - Leonard, Aeriel

A2 - Maier, Petra

A2 - Neelameggham, Neale R.

A2 - Miller, Victoria M.

PB - Springer Science and Business Media Deutschland

T2 - 152nd TMS Annual Meeting and Exhibition

Y2 - 19 March 2023 through 23 March 2023

ER -