Superplastic deformation behaviors of powder-metallurgical Ti-6Al-4V

被引：0

作者：

Wei, Jiashu ^{[1
]}

机构：

[1] Shijiazhuang Tiedao Univ, Engn Training Ctr, Shijiazhuang 050043, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2025年 / 35卷

关键词：

Superplasticity; Powder metallurgy; Ti-6Al-4V; Deformation mechanism; Dynamic recrystallization; superplasticity; GRAIN-SIZE; MECHANISMS; ALLOY; FRACTURE; ENERGY;

D O I：

10.1016/j.jmrt.2025.01.106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Powder-metallurgical (PM) Ti-6Al-4V with an average grain size of 22.3 mu m was prepared via cold isostatic pressing and vacuum sintering. The superplastic deformation behaviors of PM Ti-6Al-4V in the temperature range of 800-1000 degrees C and strain rate range of 0.01-0.001 s-1 were investigated in terms of microstructural evolution, kinetics, and superplasticity mechanisms. The dominant microstructural evolution mechanisms of PM Ti-6Al-4V samples at 950 and 1000 degrees C were continuous dynamic recrystallization (CDRX) and CDRX with a dynamic recovery of R, respectively. The increase in R-coordinated deformation restrained cavitation and promoted superplasticity. The dominant superplastic deformation mechanism of PM Ti-6Al-4V was Rachinger sliding. The dislocation creep in R, with the stress-induced phase transformation of alpha - R, accommodated the Rachinger sliding at 1000 degrees C. The intersection of the flow stress is considered to be the transition point of dynamic recrystallization - superplasticity.

引用

页码：1452 / 1465

页数：14

共 50 条

[21] Anisotropic behavior and constitutive equations of superplastic deformation of a Ti-6Al-4V alloy
Bai, BZ
Yang, HS
Chen, NP
Mukherjee, AK
SCRIPTA MATERIALIA, 1999, 40 (09) : 1079 - 1088
[22] TENSILE PROPERTIES OF STRONGLY TEXTURED TI-6AL-4V AFTER SUPERPLASTIC DEFORMATION
MCDARMAID, DS
BOWEN, AW
PARTRIDGE, PG
MATERIALS SCIENCE AND ENGINEERING, 1984, 64 (01): : 105 - 111
[23] Effect of hydrogen on superplastic deformation of (TiB + TiC)/Ti-6Al-4V composite
Lu, Junqiang
Qin, Jining
Lu, Weijie
Chen, Yifei
Zhang, Di
Hou, Hongliang
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (19) : 8308 - 8314
[24] EFFECT OF SUPERPLASTIC DEFORMATION ON MICROSTRUCTURE, TEXTURE, AND TENSILE PROPERTIES OF TI-6AL-4V
DUNFORD, DV
WISBEY, A
PARTRIDGE, PG
MATERIALS SCIENCE AND TECHNOLOGY, 1991, 7 (01) : 62 - 70
[25] Mechanical and microstructural analysis on the superplastic deformation behavior of Ti-6Al-4V Alloy
Lee, CS
Lee, SB
Kim, JS
Chang, YW
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2000, 42 (08) : 1555 - 1569
[26] DEFORMATION CHARACTERISTICS OF TI-6AL-4V
SHEPPARD, T
NORLEY, J
MATERIALS SCIENCE AND TECHNOLOGY, 1988, 4 (10) : 903 - 908
[27] Microstructural gradients in the superplastic forming of Ti-6Al-4V
S. Rhaipu
M. L. H. Wise
P. S. Bate
Metallurgical and Materials Transactions A, 2002, 33 : 93 - 100
[28] Alpha casing and superplastic behavior of Ti-6Al-4V
Patankar, SN
Kwang, YT
Jen, TM
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2001, 112 (01) : 24 - 28
[29] Microstructural gradients in the superplastic forming of Ti-6Al-4V
Rhaipu, S
Wise, MLH
Bate, PS
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2002, 33 (01): : 93 - 100
[30] Superplastic forming of Ti-6Al-4V with applications in dentistry
Curtis, RV
Juszczyk, AS
Walter, JD
SUPERPLASTICITY AND SUPERPLASTIC FORMING 1998, 1998, : 287 - 295

← 1 2 3 4 5 →