EFFECTS OF MO ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CAST MICROALLOYED STEEL
In industry, the cost of production is an important factor and it is preferred to use conventional and low cost procedures for producing the parts. Heat treatment cycles and alloying additions are the key factors affecting the microstructure and mechanical properties of the cast steels. In this stud...
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doaj-a1f7786fbbdb41c79864dc5748dc38332020-11-25T00:41:46ZengIran University of Science & TechnologyIranian Journal of Materials Science and Engineering1735-08082383-38822017-09-011437685EFFECTS OF MO ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CAST MICROALLOYED STEELH. Torkamani0H. Rashvand1Sh. Raygan2J. Rassizadehghani3Y. Palizdar4C. Garcia Mateo5D. San Martin6 Eng. Eng. Associate Professor Associate Professor Assistant Professor Tenured scientist, PhD Tenured scientist, PhD In industry, the cost of production is an important factor and it is preferred to use conventional and low cost procedures for producing the parts. Heat treatment cycles and alloying additions are the key factors affecting the microstructure and mechanical properties of the cast steels. In this study an attempt was made to evaluate the influence of minor Mo addition on the microstructure and mechanical properties of conventionally heat treated cast micro-alloyed steels. The results of Jominy and dilatometry tests and also microstructural examinations revealed that Mo could effectively increase the hardenability of the investigated steel and change the microstructure features of the air-cooled samples. Acicular microstructure was the consequence of increasing the hardenability in Mo-added steel. Besides, it was found that Mo could greatly affect the isothermal bainitic transformation and higher fraction of martensite after cooling (from isothermal temperature) was due to the Mo addition. The results of impact test indicated that the microstructure obtained in air-cooled Mo-added steel led to better impact toughness (28J) in comparison with the base steel (23J). Moreover, Mo-added steel possessed higher hardness (291HV), yield (524MPa) and tensile (1108MPa) strengths compared to the base one.http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1230-1&slc_lang=en&sid=1Mo addition conventional heat treatment cast microalloyed steel mechanical properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
H. Torkamani H. Rashvand Sh. Raygan J. Rassizadehghani Y. Palizdar C. Garcia Mateo D. San Martin |
spellingShingle |
H. Torkamani H. Rashvand Sh. Raygan J. Rassizadehghani Y. Palizdar C. Garcia Mateo D. San Martin EFFECTS OF MO ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CAST MICROALLOYED STEEL Iranian Journal of Materials Science and Engineering Mo addition conventional heat treatment cast microalloyed steel mechanical properties |
author_facet |
H. Torkamani H. Rashvand Sh. Raygan J. Rassizadehghani Y. Palizdar C. Garcia Mateo D. San Martin |
author_sort |
H. Torkamani |
title |
EFFECTS OF MO ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CAST MICROALLOYED STEEL |
title_short |
EFFECTS OF MO ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CAST MICROALLOYED STEEL |
title_full |
EFFECTS OF MO ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CAST MICROALLOYED STEEL |
title_fullStr |
EFFECTS OF MO ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CAST MICROALLOYED STEEL |
title_full_unstemmed |
EFFECTS OF MO ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CAST MICROALLOYED STEEL |
title_sort |
effects of mo addition on the microstructure and mechanical properties of cast microalloyed steel |
publisher |
Iran University of Science & Technology |
series |
Iranian Journal of Materials Science and Engineering |
issn |
1735-0808 2383-3882 |
publishDate |
2017-09-01 |
description |
In industry, the cost of production is an important factor and it is preferred to use conventional and low cost procedures for producing the parts. Heat treatment cycles and alloying additions are the key factors affecting the microstructure and mechanical properties of the cast steels. In this study an attempt was made to evaluate the influence of minor Mo addition on the microstructure and mechanical properties of conventionally heat treated cast micro-alloyed steels. The results of Jominy and dilatometry tests and also microstructural examinations revealed that Mo could effectively increase the hardenability of the investigated steel and change the microstructure features of the air-cooled samples. Acicular microstructure was the consequence of increasing the hardenability in Mo-added steel. Besides, it was found that Mo could greatly affect the isothermal bainitic transformation and higher fraction of martensite after cooling (from isothermal temperature) was due to the Mo addition. The results of impact test indicated that the microstructure obtained in air-cooled Mo-added steel led to better impact toughness (28J) in comparison with the base steel (23J). Moreover, Mo-added steel possessed higher hardness (291HV), yield (524MPa) and tensile (1108MPa) strengths compared to the base one. |
topic |
Mo addition conventional heat treatment cast microalloyed steel mechanical properties |
url |
http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1230-1&slc_lang=en&sid=1 |
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