National Taiwan Ocean University Institutional Repository:Item 987654321/52286
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28595/40626
Visitors : 4206271      Online Users : 52
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item:

Title: Liquation Cracking in the Heat-affected Zone of IN 738 Superalloy Weld
Authors: Kai-Cheng Chen
Tai-Cheng Chen
R. K. Shiue
Leu-Wen Tsay*
Contributors: 國立臺灣海洋大學:材料工程研究所
Keywords: IN738 superalloy
HAZ cracking
Date: 2018-05
Issue Date: 2019-06-21T06:20:31Z
Publisher: Metals
Abstract: Abstract: The main scope of this study investigated the occurrence of liquation cracking in the heat-affected zone (HAZ) of IN738 superalloy weld, IN738 is widely used in gas turbine blades in land-based power plants. Microstructural examinations showed considerable amounts of γ’ uniformly precipitated in the γ matrix. Electron probe microanalysis (EPMA) maps showed the γ-γ’ colonies were rich in Al and Ti, but lean in other alloy elements. Moreover, the metal carbides (MC), fine borides (M3B2 and M5B3), η-Ni3Ti, σ (Cr-Co) and lamellar Ni7Zr2 intermetallic compounds could be found at the interdendritic boundaries. The fracture morphologies and the corresponding EPMA maps confirmed that the liquation cracking in the HAZ of the IN738 superalloy weld resulted from the presence of complex microconstituents at the interdendritic boundaries.
Relation: 8(6) pp.387
Appears in Collections:[Institute of Materials Engineering] Periodical Articles

Files in This Item:

File Description SizeFormat

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