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188102

Some Relationships among Residual, Micro-Structure, and Micro-Hardness Ensued due to Vertical End Milling Operations.

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Production Engineering and Mechanical Design

Abstract

The study residual stresses due to machining is a very important facet industrial applications such as in aircraft of the components.
End milling tests were performed on free machining brass plates.
Compressive residual stresses were left within the machined surfaces. Assessments of the distribution of resisdual stresses underneath the machined surface have been given via a post removal technique. Microstructural examinations were made utilizing an optical microscope. Nitric acid of 32.5% concentration was used as etchant for the sides of the plates to reveal the proper grain boundaries. The change in the average grain size with the sub-surface depth, after milling was determined.
The milled sides of the free machining brass specimens were subjected, as well, to micro-hardness examinations via a 100 gram load starting from the specimen surface till no change in micro-hardness were noted. Relationships between the knop micro-hardness values and the sub-surface depth were, then, obtained.
All the test results indicated that maxima for residual stresses and micro-hardness together with minima for average grain size occurred near the surface of the plates . Moreover, it was found that starting off such locations values of residual stresses and micro-hardness decreased while grain size increased inter-relations among these three variables under such conditions were, then, deduced.      

DOI

10.21608/bfemu.2021.188102

Authors

First Name

M.

Last Name

Abdel-Moneim

MiddleName

ES.

Affiliation

Professor of Production and Design Engineering Department., Faculty of Engineering

Email

-

City

-

Orcid

-

First Name

M.

Last Name

Shaker

MiddleName

-

Affiliation

Associate Professor., Production Engineering Department., Faculty of Engineering and Technology., Suez Canal University., Port Said.

Email

-

City

-

Orcid

-

First Name

Mohamed

Last Name

Shabara

MiddleName

Ahmed Nasr

Affiliation

Associate Professor., Industrial Production Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

A.

Last Name

El-Domiaty

MiddleName

A.

Affiliation

Assistant Professor., Production Engineering Department., Faculty of Engineering and Technology., Suez Canal University., Port Said.

Email

-

City

Port Said

Orcid

-

First Name

A.

Last Name

Nassf

MiddleName

ES.

Affiliation

Assistant Professor., Production Engineering Department., Faculty of Engineering and Technology., Suez Canal University., Port Said.

Email

-

City

-

Orcid

-

Volume

16

Article Issue

2

Related Issue

27058

Issue Date

1991-12-01

Receive Date

1991-10-10

Publish Date

2021-08-01

Page Start

1

Page End

12

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 16_Issue 2_Pages 1-12.pdf

PDF . 673.3kB

Link

https://bfemu.journals.ekb.eg/article_188102.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=188102

Order

16

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Some Relationships among Residual, Micro-Structure, and Micro-Hardness Ensued due to Vertical End Milling Operations.

Details

Type

Article

Created At

22 Jan 2023