Hot rolling of binary Ti-Nb alloys Part II: mechanical properties anisotropy

被引：18

作者：

Banumathy, S. ^{[1
]}

Mandal, R. K. ^{[2
]}

Singh, A. K. ^{[1
]}

机构：

[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India

[2] Banaras Hindu Univ, Inst Technol, Ctr Adv Study, Dept Met Engn, Varanasi 221005, Uttar Pradesh, India

来源：

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2011年 / 102卷 / 02期

关键词：

Hot rolling; Ti-Nb alloys; Mechanical properties anisotropy; Yield locus; Fracture surface; FRACTURE TOUGHNESS; TITANIUM ALLOYS; TEXTURE; DEFORMATION; TI-6AL-4V; SHEET;

D O I：

10.3139/146.110468

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

This work describes the nature of anisotropy in mechanical properties of three alloys, namely Ti-8Nb, Ti-12Nb and Ti-16Nb in the hot rolled condition. The work hardening curves of the alloys Ti-8Nb and Ti-12Nb exhibit a single slope and follow the Ludwik relation. The alloy Ti-16Nb displays two slopes in work hardening curves. This indicates that two different mechanisms are operative during tensile testing. The work hardening curves follow a modified Ludwik equation. The alloy Ti-16Nb exhibits the lowest anisotropy index and percentage in plane anisotropy. The alloy Ti-12Nb exhibits the highest values of both the anisotropy index and percentage in plane anisotropy. The low percentage in plane anisotropy of the alloy Ti-16Nb has been attributed to the presence of fibre textures. The yield loci of the hot rolled alloys have been determined using the Knoop hardness method. The results show that hot rolling induces anisotropy in yield strength and changes the shape and size of yield locus plots.

引用

页码：208 / 217

页数：10

共 32 条

[1] EFFECT OF PROCESSING ON PLASTIC ANISOTROPY OF TI-6AL-4V [J].

AMATEAU, MF ;

DULL, DL ;

RAYMOND, L .

METALLURGICAL TRANSACTIONS, 1974, 5 (03) :561-564

[2] Hot rolling of binary Ti-Nb alloys Part 1: evolution of microstructure and texture [J].

Banumathy, S. ;

Mandal, R. K. ;

Singh, A. K. .

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2011, 102 (01) :82-92

[3] INFLUENCE OF CRYSTALLOGRAPHIC ORIENTATION ON FRACTURE TOUGHNESS OF STRONGLY TEXTURED TI-6AL-4V [J].

BOWEN, AW .

ACTA METALLURGICA, 1978, 26 (09) :1423-1433

[4]

Collings E.W., 1984, ASM HDB, P3

[5]

DURIG TW, 1982, ACTA METALL, V30, P2161, DOI DOI 10.1016/0001-6160(82)90137-7

[6]

HATCH AJ, 1965, T METALL SOC AIME, V233, P44

[7]

INAGAKI H, 1992, Z METALLKD, V83, P40

[8] The anisotropy and texture of Al-Li alloys [J].

Jata, KV ;

Hopkins, AK ;

Rioja, RJ .

ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3, 1996, 217 :647-652

[9]

JENSEN JA, 1972, CAN METALL QTY, V11, P314

[10]

KELLY EW, 1968, T METALL SOC AIME, V242, P654

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