English  |  正體中文  |  简体中文  |  Items with full text/Total items : 27221/39064
Visitors : 2404469      Online Users : 63
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/23730

Title: The Effect of Preheating on Notched Tensile Strength and Impact Toughness of Ti-6Al-6V-2Sn Laser Welds
Authors: Leu-Wen Tsay;Yun-Chen Jiang;Chun Chen
Contributors: NTOU:Institute of Materials Engineering
國立臺灣海洋大學:材料工程研究所
Keywords: notched tensile strength;impact toughness;titanium-6 aluminum-6 vanadium-2 tin;laser welding
Date: 2011
Issue Date: 2011-10-20T08:07:35Z
Publisher: Materials Transactions(The Japan Institute of Metals)
Abstract: Abstract:Notched tensile strength (NTS) and impact toughness were determined for Ti-6Al-6V-2Sn laser welds subjected to post-weld heat treatment (PWHT) at distinct temperatures. In this study, the specimens were either preheated at 300°C or maintained at room temperature before laser welding. The preheated weld, associated with a reduced cooling rate, had obviously lower hardness than the non-preheated weld in the as-welded condition. After PWHT at 482°C for 3 h, the preheated weld also exhibited considerably lower hardness than the non-preheated weld. In general, preheating at 300°C could effectively increase the NTS and impact toughness of Ti-6Al-6V-2Sn laser welds. The preheated weld in the as-welded condition had superior NTS to other welds being tested. On the other hand, the welds after PWHT at 704°C possessed the best resistance to unstable impact fracture, regardless of preheating. Usually, the coarse α + β structures together with intergranular α were responsible for the high NTS and impact toughness of the weld.
Relation: 52(3), pp.406-411
URI: http://ntour.ntou.edu.tw/handle/987654321/23730
Appears in Collections:[材料工程研究所] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML207View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback