On the validity of Hall-Petch equation for single-phase beta Ti-Al-Nb alloys undergoing stress-induced martensitic transformation
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
On the validity of Hall-Petch equation for single-phase beta Ti-Al-Nb alloys undergoing stress-induced martensitic transformation
|
|
Creator |
PARADKAR, AG
KAMAT, SV GOGIA, AK KASHYAP, BP |
|
Subject |
grain-size
mechanical-behavior tempered martensite tensile properties 2-phase materials transient creep trigger stress carbon-steels microstructure toughness ti-al-nb alloys stress-induced martensitic transformation (simt) yield strength hall-petch relationship |
|
Description |
The yield strengths of Ti-Al-Nb alloys, which undergo stress-induced martensitic transformation, prior to the onset of plastic deformation during tensile testing, were found to obey the Hall-Petch relationship with grain size. The overall friction stress (sigma(oc)(i)) was observed to decrease with increase in Nb content while it remained more or less unchanged with increase in Al content in these alloys. On the other hand, the overall k(y)(oc), the unpinning constant, which is an index of the efficiency of boundaries as obstacle to dislocation motion, was found to increase with increase in Nb and decrease with increase in Al content in these alloys. (C) 2009
|
|
Publisher |
ELSEVIER SCIENCE SA
|
|
Date |
2011-07-28T14:52:24Z
2011-12-26T12:59:45Z 2011-12-27T05:52:33Z 2011-07-28T14:52:24Z 2011-12-26T12:59:45Z 2011-12-27T05:52:33Z 2009 |
|
Type |
Article
|
|
Identifier |
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 520(1-2), 168-173
0921-5093 http://dx.doi.org/10.1016/j.msea.2009.05.041 http://dspace.library.iitb.ac.in/xmlui/handle/10054/7430 http://hdl.handle.net/10054/7430 |
|
Language |
en
|
|