E-ISSN 2705-3954 | ISSN 0794-4756
 
2024, Vol: 31, Issue: 1
31 / 1Current Issue Online FirstArchiveAims and ScopeAbstracting & IndexingMost Accessed ArticlesMost Downloaded ArticlesMost Cited Articles

Original Research 


RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS

A. A. Alabi; S. M. Tahir; M. A. Azmah Hanim; N. I. Zahari; M. S. Anuar.

Abstract
Iron and copper powders are the two most commonly used metallic raw materials for components formation in the powder
metallurgy (PM) industry. The quality of a PM component depends on the ability to achieve high green strength. Most PM
components are susceptible to fracture failure due to unpredictable crack propagation and inhomogeneous density
distribution. In this paper, we examined the influence of the relative density of green iron and copper powder compacts on t he
rate of crack propagation due to shear loading, or the mode II fracture toughness (KIIC). The integrated uniaxial compaction
of a fixed amount of loose powder method was used to produce the modified diametrical compression test technique (MDCTT)
samples used to evaluate the KIIC of the two metal powder compacts studied. The rate of the in-plane crack propagation in the
powder compacts slows down as the powder compacts became denser. The inverse of the fracture toughness, was found
to be related to by constants that are unique to each of the powders. The constants are 33.2 for the iron powder
compacts and 55.5 for the copper powder compacts. Furthermore, the constants were found to be related to the coefficients of
thermal expansivity for solid iron and solid copper. This study has provided a mathematical relation that can be used to
estimate the KIIC for iron and copper based powder compacts from their relative densities. The mathematical relation is also
capable of providing useful information about the thermal properties of the related metals.

Key words: Fracture toughness, relative density, metal powder compact, compression test.


 
ARTICLE TOOLS
Abstract
PDF Fulltext
How to cite this articleHow to cite this article
Citation Tools
Related Records
 Articles by A. A. Alabi; S. M. Tahir; M. A. Azmah Hanim; N. I. Zahari; M. S. Anuar
on Google
on Google Scholar

How to Cite this Article
Pubmed Style

Alabi AA, Tahir SM, Hanim MAA, Zahari NI, Anuar MS. RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS. NJE. 2019; 26(3): 77-90.

Web Style

Alabi AA, Tahir SM, Hanim MAA, Zahari NI, Anuar MS. RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS. https://www.njeabu.com.ng/?mno=23189 [Access: January 05, 2024].

AMA (American Medical Association) Style

Alabi AA, Tahir SM, Hanim MAA, Zahari NI, Anuar MS. RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS. NJE. 2019; 26(3): 77-90.


Vancouver/ICMJE Style

Alabi AA, Tahir SM, Hanim MAA, Zahari NI, Anuar MS. RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS. NJE. (2019), [cited January 05, 2024]; 26(3): 77-90.


Harvard Style

Alabi, A. A., Tahir, . S. M., Hanim, . M. A. A., Zahari, . N. I. & Anuar, . M. S. (2019) RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS. NJE, 26 (3), 77-90.


Turabian Style

Alabi, A. A., S. M. Tahir, M. A. Azmah Hanim, N. I. Zahari, and M. S. Anuar. 2019. RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS. Nigerian Journal of Engineering, 26 (3), 77-90.


Chicago Style

Alabi, A. A., S. M. Tahir, M. A. Azmah Hanim, N. I. Zahari, and M. S. Anuar. "RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS." Nigerian Journal of Engineering 26 (2019), 77-90.


MLA (The Modern Language Association) Style

Alabi, A. A., S. M. Tahir, M. A. Azmah Hanim, N. I. Zahari, and M. S. Anuar. "RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS." Nigerian Journal of Engineering 26.3 (2019), 77-90. Print.


APA (American Psychological Association) Style

Alabi, A. A., Tahir, . S. M., Hanim, . M. A. A., Zahari, . N. I. & Anuar, . M. S. (2019) RELATIONSHIP BETWEEN FRACTURE TOUGHNESS AND RELATIVE DENSITY IN IRON AND COPPER METAL POWDER COMPACTS. Nigerian Journal of Engineering, 26 (3), 77-90.


Author LoginReviewer LoginAbout PublisherEditorial Review PolicyPeer Review PolicyEditorial & Peer Review ProcessPlagiarism Policy

About Nigerian Journal of Engineering

Nigerian Journal of Engineering (NJE) is a publication of the Faculty of Engineering, Ahmadu Bello University, Zaria - Nigeria. NJE publishes origina ... Read more.



For best results, please use Internet Explorer or Google Chrome.

Contact Information

The Editor–in–Chief

Nigerian Journal of Engineering

Faculty of Engineering

Ahmadu Bello University

Samaru - Zaria Nigeria

E-mails:

nje@abu.edu.ng, njeabu@yahoo.com