Investigation of fracture mechanical properties of a brass alloy with microstructural variations
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In: Engineering Fracture Mechanics, Vol. 311.2024, No. 25 November, 110564, 25.11.2024.
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TY - JOUR
T1 - Investigation of fracture mechanical properties of a brass alloy with microstructural variations
AU - Klaushofer, Martin
AU - Stoschka, Michael
AU - Maier, Bernd
AU - Grün, Florian
N1 - Publisher Copyright: © 2024 The Authors
PY - 2024/11/25
Y1 - 2024/11/25
N2 - This study investigates the effect of microstructural variations on the mechanical properties of CuZn35Mn2Al1Fe1-C-GS brass alloy. Specimens taken from positions with different cooling rates in a large cast component exhibit coarse-grained (approximately 5 mm) and fine-grained (approximately 1 mm) microstructures. Fine-grained samples demonstrate at least a 7% increase in Ultimate Tensile Strength (UTS) and up to a 33% higher long crack threshold ΔKth,lc. Hardness measurements are similar between microstructures. The NASGRO model and cyclic R-curve are applied to fit crack propagation data, and fractographic analysis reveals distinct fracture mechanisms. The results indicate that a fine-grained microstructure enhances tensile strength and crack resistance, providing valuable insights for the design and maintenance of heavy machinery components made from cast brass.
AB - This study investigates the effect of microstructural variations on the mechanical properties of CuZn35Mn2Al1Fe1-C-GS brass alloy. Specimens taken from positions with different cooling rates in a large cast component exhibit coarse-grained (approximately 5 mm) and fine-grained (approximately 1 mm) microstructures. Fine-grained samples demonstrate at least a 7% increase in Ultimate Tensile Strength (UTS) and up to a 33% higher long crack threshold ΔKth,lc. Hardness measurements are similar between microstructures. The NASGRO model and cyclic R-curve are applied to fit crack propagation data, and fractographic analysis reveals distinct fracture mechanisms. The results indicate that a fine-grained microstructure enhances tensile strength and crack resistance, providing valuable insights for the design and maintenance of heavy machinery components made from cast brass.
KW - Cast brass
KW - Crack growth resistance
KW - Microstructure characterization
KW - Tensile strength
UR - http://www.scopus.com/inward/record.url?scp=85207694792&partnerID=8YFLogxK
U2 - 10.1016/j.engfracmech.2024.110564
DO - 10.1016/j.engfracmech.2024.110564
M3 - Article
AN - SCOPUS:85207694792
VL - 311.2024
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
SN - 0013-7944
IS - 25 November
M1 - 110564
ER -
