Internal-stress-induced martensitic transformation of boundary {gamma}-Fe particles caused by boundary sliding in Cu

Journal Article · Sat Apr 01 00:00:00 EST 1995 · Acta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-7151(94)00353-J· OSTI ID:39846

Monzen, Ryoichi ^[1]; Mori, T ^[2]

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1. Kanazawa Univ. (Japan). Dept. of Mechanical Systems Engineering
2. Tokyo Inst. of Tech., Yokohama (Japan). Dept. of Materials Science and Engineering

An internal stress has been introduced by the blocking of grain boundary sliding at 548 K by small coherent {gamma}-Fe particles on a small angle boundary in bicrystals of a Cu-Fe alloy. The martensitic transformation in larger {gamma}-Fe particles is more easily induced by the internal stress during cooling to 77 K. The effect of plastic strain on the transformation is completely retarded. Some specific martensite variants are formed preferentially and the results can be well explained by postulating that the internal stress aids the lattice shear deformation involved in the f.c.c. to b.c.c. lattice change.

• OSTI ID: 39846
• Journal Information: Acta Metallurgica et Materialia, Vol. 43, Issue 4; Other Information: PBD: Apr 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER BASE ALLOYS
CRYSTAL-PHASE TRANSFORMATIONS
IRON ALLOYS
BINARY ALLOY SYSTEMS
BICRYSTALS
SAMPLE PREPARATION
GRAIN BOUNDARIES
STRESSES
CRYSTAL STRUCTURE
DISPERSIONS