The role of microstructure in the stress relaxation and tempering of laser clad Ti-6Al-4V

被引：17
作者：
Cottam, R. [1 ,6 ]
Luzin, V. [2 ]
Liu, Q. [3 ,6 ]
Mayes, E. [4 ]
Wong, Y. C. [1 ,6 ]
Wang, J. [1 ]
Brandt, M. [5 ,6 ]
机构：
[1] Swinburne Univ Technol, Ind Laser Applicat Lab, IRIS, Fac Engn & Ind Sci, Hawthorn, Vic 3122, Australia
[2] Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2232, Australia
[3] Def Sci & Technol Org, Fishermans Bend, Vic 3207, Australia
[4] Sch Appl Sci Phys, Bundoora, Vic 3083, Australia
[5] RMIT Univ, Sch Aerosp Mech & Mfg Engn, Bundoora, Vic 3083, Australia
[6] Def Mat Technol Ctr, Hawthorn, Vic 3122, Australia
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 601卷
关键词：
Laser cladding; Residual stress; Ti-6Al-4V; Neutron diffraction; WELD HEAT-TREATMENT; P91; STEEL-PIPE; RESIDUAL-STRESS; PHASE-TRANSFORMATIONS; TITANIUM-ALLOYS; DISTRIBUTIONS; DIFFRACTION;
D O I：
10.1016/j.msea.2014.02.034
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this work a heat treatment procedure was performed on laser clad Ti-6Al-4V, which resulted in a reduction of tensile residual stresses in the clad samples as well and a decrease in the hardness of the clad layer with an increasing heat treatment time. The reduction in the residual stress was attributed to inter-phase stress relaxation brought about by the growth of the beta phase. The reduction in hardness was attributed to an increase in the volume fraction of the soft beta phase. Both the reduction in residual stress and hardness due to this heat treatment makes it an attractive method to heat treat both laser clad and additively manufactured Ti-6Al-4V components for improved mechanical properties. Crown Copyright (c) 2014 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：65 / 69
页数：5
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