Analysis of Hall- Petch Type Relationship in BCC and Nano- Crystalline Metals (Record no. 14786)

MARC details
000 -LEADER
fixed length control field 02390nam a22001697a 4500
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 620.112 91
Item number D682A
100 ## - MAIN ENTRY--AUTHOR NAME
Personal name Dongarwar, Rubal
245 ## - TITLE STATEMENT
Title Analysis of Hall- Petch Type Relationship in BCC and Nano- Crystalline Metals
Statement of responsibility, etc by Rubal Dongarwar
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication IIT Jodhpur
Name of publisher Department of Metallurgical & Materials Engineering
Year of publication 2020
300 ## - PHYSICAL DESCRIPTION
Number of Pages xii,40p.
Other physical details HB
520 ## - SUMMARY, ETC.
Summary, etc Refining a metal’s grain size can result in dramatic increases in strength, and the magnitude of this strengthening increment can be estimated using the Hall–Petch equation. Since the Hall–Petch equation was proposed, there have been many experimental studies supporting its applicability to pure metals and alloys. Several studies on bcc metals have shown that even when these materials twin during deformation, their yield stress is still related to the grain size through the HP equation. We have gathered the grain-size strengthening data from the Hall–Petch studies on bcc and nanocrystalline metals and used this aggregated data to calculate best estimates of these metal’s Hall–Petch parameters. We also use this aggregated data to re-evaluate the various models developed to physically support the Hall–Petch scaling.The aim of our present work is to investigate the effect of Hall-Petch relationship and see the variation in H-P parameters like 𝜎0 and 𝑘 on the substructure evolution in the grain interior and grain boundary region of some bcc and nanocrystalline metals. While the data are traditionally fitted to the inverse square-root dependence, they also fit well to other functions, both power law and non-power law. Through our analysis, we made an attempt to understand the behaviour of grain interior and grain boundary region which can guide us about the microstructure evolution during deformation in the material. It is important to note that for nanomaterials with grain sizes of several tens of nanometres this law, to a certain extent, is not observed, giving way to the so-called inverse Hall-Petch effect.Keywords: Hall–Petch relationship, Grain-size, Grain Boundary, Grain interior, BCC and Nano crystalline metals, Inverse Hall-Petch effect.<br/>
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term Hall- Petch Type Relationship
Topical Term MTech Theses
Topical Term Department of Metallurgical & Materials Engineering
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name Kashyap. B.P.
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Thesis
Holdings
Withdrawn status Lost status Damaged status Not for loan Collection code Permanent Location Current Location Shelving location Date acquired Full call number Accession Number Price effective from Koha item type
      Not For Loan Reference S. R. Ranganathan Learning Hub S. R. Ranganathan Learning Hub Course Reserve 2024-02-05 620.112 91 D682A TM00200 2024-02-05 Thesis