A Study of High Temperature Mechanical Properties of Lead-bearing Free-Cutting Low Alloy Steel
碩士 === 國立雲林科技大學 === 機械工程技術研究所 === 87 === A Study of High Temperature Mechanical Properties of the Lead-bearing Free-Cutting Low Alloy Steel Student:Shyh-Yii Wuu Advisor: Dr.Chun-Kan Hou Institute of Mechanical Engineering National Yunlin University of...
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ndltd-TW-087YUNTE4880242015-10-13T11:50:27Z http://ndltd.ncl.edu.tw/handle/41097149689529609573 A Study of High Temperature Mechanical Properties of Lead-bearing Free-Cutting Low Alloy Steel SCM420含鉛鉻鉬快削低合金鋼高溫機械性質之研究 Shyh-yii Wuu 武世乙 碩士 國立雲林科技大學 機械工程技術研究所 87 A Study of High Temperature Mechanical Properties of the Lead-bearing Free-Cutting Low Alloy Steel Student:Shyh-Yii Wuu Advisor: Dr.Chun-Kan Hou Institute of Mechanical Engineering National Yunlin University of Science and Technology ABSTRACT The high temperature mechanical properties of five lead-bearing SCM420 low alloy steels were studied. It was found that yield and tensile strength had a maximum value at 327℃and then decreased with increasing temperature and leveled off at700℃. On the contrast,elongation and reduction of area had a minimum at 327℃ and increased with increasing temperature. However,they rapidly decreased if temperature higher than 700℃. In 400℃~700℃,both elongation and reduction of area decreased with increasing lead sulfur contents .At800℃Yield and tensile strength increased with increasing strain rate.In300℃~400℃,the CVN had a minimum and decreased with increasing lead and sulfur contents. In 950℃~1250℃,yield and tensile strength decreased with increasing temperature. Elongation and reduction of area increased with temperature and decreased with increasing lead and sulfur contents. (Keyword:high temperature mechanical properties,free-cutting low alloy steel,strain rate ,elongation,reduction of area,strength) Chun-Kan Hou 侯春看 1999 學位論文 ; thesis 193 zh-TW |
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碩士 === 國立雲林科技大學 === 機械工程技術研究所 === 87 === A Study of High Temperature Mechanical Properties of the Lead-bearing Free-Cutting Low Alloy Steel
Student:Shyh-Yii Wuu Advisor: Dr.Chun-Kan Hou
Institute of Mechanical Engineering
National Yunlin University of Science and Technology
ABSTRACT
The high temperature mechanical properties of five lead-bearing SCM420 low alloy steels were studied. It was found that yield and tensile strength had a maximum value at 327℃and then decreased with increasing temperature and leveled off at700℃. On the contrast,elongation and reduction of area had a minimum at 327℃ and
increased with increasing temperature. However,they rapidly decreased if temperature higher than 700℃. In 400℃~700℃,both elongation and reduction of area decreased with increasing lead sulfur contents .At800℃Yield and tensile strength increased with increasing strain rate.In300℃~400℃,the CVN had a minimum and decreased with increasing lead and sulfur contents. In 950℃~1250℃,yield and tensile strength decreased with increasing temperature. Elongation and reduction of area increased with temperature and decreased with increasing lead and sulfur contents.
(Keyword:high temperature mechanical properties,free-cutting low alloy steel,strain rate ,elongation,reduction of area,strength)
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author2 |
Chun-Kan Hou |
author_facet |
Chun-Kan Hou Shyh-yii Wuu 武世乙 |
author |
Shyh-yii Wuu 武世乙 |
spellingShingle |
Shyh-yii Wuu 武世乙 A Study of High Temperature Mechanical Properties of Lead-bearing Free-Cutting Low Alloy Steel |
author_sort |
Shyh-yii Wuu |
title |
A Study of High Temperature Mechanical Properties of Lead-bearing Free-Cutting Low Alloy Steel |
title_short |
A Study of High Temperature Mechanical Properties of Lead-bearing Free-Cutting Low Alloy Steel |
title_full |
A Study of High Temperature Mechanical Properties of Lead-bearing Free-Cutting Low Alloy Steel |
title_fullStr |
A Study of High Temperature Mechanical Properties of Lead-bearing Free-Cutting Low Alloy Steel |
title_full_unstemmed |
A Study of High Temperature Mechanical Properties of Lead-bearing Free-Cutting Low Alloy Steel |
title_sort |
study of high temperature mechanical properties of lead-bearing free-cutting low alloy steel |
publishDate |
1999 |
url |
http://ndltd.ncl.edu.tw/handle/41097149689529609573 |
work_keys_str_mv |
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