An empirical approach to strain to fracture of two-ductile-phase alloys. [Ti-Mn alloys and ferrite-martensite steels]

Journal Article · Thu Apr 15 00:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90052-T· OSTI ID:6520679

Fan, Z; Miodownik, A P ^[1]

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1. Univ. of Surrey (United Kingdom)

Two-ductile-phase alloys refer to the alloys comprising two phases which are plastically deformable under applied stress, for example, [alpha]-[beta] brasses, [alpha]-[beta] Ti-alloys and dual-phase steels. As a group, two-ductile-phase alloys offer an excellent combination of high strength, good ductility and promising fracture toughness. In this paper, the authors present an empirical approach to the strain to fracture of two-ductile-phase alloys, based on the microstructural characterization method developed by Fan et al. The proposed approach can predict the strain to fracture of two-ductile-phase alloys in terms of the strains to fracture of the constituent phases and the microstructural parameters, such as volume fraction, contiguity and grain size of each constituent phase. The predictions by the present approach will be compared with the experimental results in [alpha]-[beta] Ti-Mn alloys and ferrite-martensite dual-phase steels drawn from the literature. In addition, the effect of relative grain size (the grain size ratio) on the strain to fracture of two-ductile-phase alloys will be discussed.

• OSTI ID: 6520679
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 28:8; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FERRITIC STEELS
MECHANICAL PROPERTIES
MANGANESE ALLOYS
MARTENSITIC STEELS
TITANIUM ALLOYS
CALCULATION METHODS
COMPARATIVE EVALUATIONS
FRACTURE PROPERTIES
GRAIN SIZE
MICROSTRUCTURE
STRAINS
THEORETICAL DATA
ALLOYS
CRYSTAL STRUCTURE
DATA
EVALUATION
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
NUMERICAL DATA
SIZE
STEELS
360103* - Metals & Alloys- Mechanical Properties