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49276

AN ELECTRON FRACTOGRAPHIC STUDY OF THE INFLUENCE OF ANNEALING CONDITIONS UPON DUCTILE RUPTURE PROCESS IN Cu-Zn BRASSES

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Last updated: 04 Jan 2025

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Abstract

An investigation on the fracture phenomena of (α+β) brass, polycrystalline alloys, has been conducted using the scanning electron microscope(S.E.M.). The as-rolled alloys (starting material) were subjected to different conditions of annealing. Then, tensile tests were carried out at room temperature on three categories of specimens being; (i) as-rolled, (ii) an-nealed at 923K for 86.4ks, and (iii) annealed at 873K for 2 Ms plus 1.4 Ms at 800k. All types of specimens showed ductile fracture. Fracture surfaces were then observed by the S.E.M. on both the macro-and micro-scopic scales. All specimens exhibited a transgranular mode of fracture. Fracture surfaces revealed some changes in the pattern observed on each phase due to annealing conditions. Dimple pattern was observed on the (β-phase, although different dimple size existed for different types of specimens. On the other hand, on the α-phase, fracture surface, smooth ripple pattern was observed, additionally, large dimples were detected on the α-surface. In essence, the present results not only confirmed previous results on single-and bi-crystals of brass but also throw the light on more details about the fracture phenomena of brass which was not reported before.

DOI

10.21608/amme.1984.49276

Authors

First Name

TAHA

Last Name

GOMAA

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Affiliation

Graduate school,Mechanical Department, Faculty of Engineering, AL Azhar University.

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First Name

NABIL

Last Name

FAT-HALLA

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Affiliation

Mechanical Department, Faculty of Engineering, AL Azhar University.

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First Name

MAZEN

Last Name

NEGM

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-

Affiliation

Mechanical Department, Faculty of Engineering, AL Azhar University.

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Orcid

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First Name

MOHAMMAD

Last Name

REFAI

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-

Affiliation

Mechanical Department, Faculty of Engineering, AL Azhar University.

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Volume

1

Article Issue

1st Conference on Applied Mechanical Engineering.

Related Issue

7555

Issue Date

1984-05-01

Receive Date

2019-09-24

Publish Date

1984-05-01

Page Start

105

Page End

111

Print ISSN

2636-4352

Online ISSN

2636-4360

Link

https://amme.journals.ekb.eg/article_49276.html

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https://amme.journals.ekb.eg/service?article_code=49276

Order

54

Type

Original Article

Type Code

831

Publication Type

Journal

Publication Title

The International Conference on Applied Mechanics and Mechanical Engineering

Publication Link

https://amme.journals.ekb.eg/

MainTitle

AN ELECTRON FRACTOGRAPHIC STUDY OF THE INFLUENCE OF ANNEALING CONDITIONS UPON DUCTILE RUPTURE PROCESS IN Cu-Zn BRASSES

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Article

Created At

22 Jan 2023