Paper Title:
The Effect of Heat Treatment on Mechanical Properties of Pulsed Nd:YAG Welded Thin Ti6Al4V
  Abstract

Pulsed Nd:YAG has been adopted successfully in welding process of thin (0.7 mm) Ti6Al4V. Laser welding of such thin sheet requires a small focal spot, good laser beam quality and fast travel speed, since too much heat generation can cause distortion for thin sheet weld. The microstructures of Ti6Al4V were complex and strongly affected the mechanical properties. These structures include: α´ martensite, metastable β, Widmanstätten, bimodal, lamellar and equiaxed microstructure. Bimodal and Widmanstätten structures exhibit a good-balance between strength and ductility. The microstructure of pulsed Nd:YAG welded Ti6Al4V was primarily α´ martensite, which showed the lowest ductility but not significantly high strength. A heat treatment at 950 followed by furnace cooling can transform the microstructure in the weld from α´ martensite structure into Widmanstätten structure.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
3672-3677
DOI
10.4028/www.scientific.net/AMR.189-193.3672
Citation
Y. Fan, P. H. Shipway, G. D. Tansley, J. Xu, "The Effect of Heat Treatment on Mechanical Properties of Pulsed Nd:YAG Welded Thin Ti6Al4V", Advanced Materials Research, Vols. 189-193, pp. 3672-3677, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yoshifumi Iwasaki, Yuji Nakasone
Abstract:The present study has investigated plasticity-induced martensitic phase transformation in fatigue of unnotched SUS304 plates. Martensitic...
1152
Authors: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: De Liang Ren, Fu Ren Xiao, P. Tian, X. Wang, L.Y. Zhang, Bo Liao
Abstract:With the development of high toughness pipeline, it is necessary to develop new welding wires for high-efficiency submerged-arc welding, to...
385
Authors: Zhen Bing Cai, Min Hao Zhu, Xiu Zhou Lin, Ji Liang Mo, Zhong Rong Zhou
Abstract:Nickel base Ni60 and cobalt base Co-Cr-W coatings were prepared on substrate of refractory alloy steel 4Cr14NiW2Mo by laser-cladding...
878
Authors: Qiang Shen, Chang Lian Chen, Fei Chen, Qi Wen Liu, Lian Meng Zhang
Abstract:Porous calcia stabilized zirconia ceramics (CSZC) with closed pores were presurelessly sintered by adding different contents of zirconia...
435