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مقاله
1 - The methods of sever plastic’s deformation in order to fine-graining matter’s structure for improvement of mechanical properties in metalsJournal of Mechanical Research and Application , شماره 1 , سال 9 , زمستان 2017Increasing material’s strength has been a significant matter since the beginning of engineering to up to now. It has always been paid attention by engineers. A variety of methods has been presented for increasing strength, stability, working range and material wor چکیده کاملIncreasing material’s strength has been a significant matter since the beginning of engineering to up to now. It has always been paid attention by engineers. A variety of methods has been presented for increasing strength, stability, working range and material working life by development of engineering sciences and more identification on material properties and the material behavior, which are surrounded by some rules. Majority of these methods accompany disadvantages and restrictions, therefore, the studies in this field for modification of methods continue. One of the newest methods for this reason is the Sever Plastics Deformation Method (SPD). This method is based on creation of NANO materials increases some desirable properties such as strength, stability, resistance against corrosion and abrasion properties. Also, it prevents the reduction of other material properties like ductility, which is known an inevitable and undesirable process in majority of older strength’s methods and even is caused to increase it. Increasing of desired properties of metals, which were under this process, is very significant, so that the products of this process are named Super Metals. In this research, mean while checking relations among the automatic lattice structure of matter with its mechanical properties somehow it has been mentioned to common method of SPD پرونده مقاله -
مقاله
2 - Improving Mechanical Properties, Especially Increasing Tubes’ Strength by Micro structuring Metals Using Severe Plastic Deformation MethodJournal of Mechanical Research and Application , شماره 4 , سال 9 , بهار 2017Increasing material’s strength is of particular importance. Improving material’s mechanical properties such as strength could reduce the size and weight of the structure. The size and weight of the structure are among the effective parameters in design. Sinc چکیده کاملIncreasing material’s strength is of particular importance. Improving material’s mechanical properties such as strength could reduce the size and weight of the structure. The size and weight of the structure are among the effective parameters in design. Since the past a variety of methods have been developed to increase the strength of metals that are capable of increasing metals’ strength to a certain level. But most of these methods while increasing strength are associated with relatively high material formability properties. This is one of the most important limitations of the methods. Plastic deformation method is among the new methods that in addition to increasing the material’s strength will strengthen other desired mechanical properties of the material by micro structuring the crystal lattice of a metal. The mechanical properties of the products of this process are so better than the original metal properties that they are known as super metals. Various methods have been developed to make the materials in tubes NANO structured. Products produced during these processes despite being thinner are less capable to withstand pressure and have higher corrosion and wear resistance compared to the tube manufactured by the conventional methods. Moreover they have the potential to be used at higher temperatures and have longer lifetime. These advantages have increased the importance of plastic deformation methods for the tubs. In this research while a brief discussion on the effect of severe plastic deformation on the material structure the conventional methods for manufacturing the tube are reviewed. پرونده مقاله -
مقاله
3 - Improving Mechanical Properties, Especially Increasing Tubes’ Strength by Micro structuring Metals Using Severe Plastic Deformation MethodJournal of Mechanical Research and Application , شماره 4 , سال 8 , بهار 2016Increasing material’s strength is of particular importance. Improving material’s mechanical properties such as strength could reduce the size and weight of the structure. The size and weight of the structure are among the effective parameters in design. Sinc چکیده کاملIncreasing material’s strength is of particular importance. Improving material’s mechanical properties such as strength could reduce the size and weight of the structure. The size and weight of the structure are among the effective parameters in design. Since the past a variety of methods have been developed to increase the strength of metals that are capable of increasing metals’ strength to a certain level. But most of these methods while increasing strength are associated with relatively high material formability properties. This is one of the most important limitations of the methods. Plastic deformation method is among the new methods that in addition to increasing the material’s strength will strengthen other desired mechanical properties of the material by micro structuring the crystal lattice of a metal. The mechanical properties of the products of this process are so better than the original metal properties that they are known as super metals. Various methods have been developed to make the materials in tubes NANO structured. Products produced during these processes despite being thinner are less capable to withstand pressure and have higher corrosion and wear resistance compared to the tube manufactured by the conventional methods. Moreover they have the potential to be used at higher temperatures and have longer lifetime. These advantages have increased the importance of plastic deformation methods for the tubs. In this research while a brief discussion on the effect of severe plastic deformation on the material structure the conventional methods for manufacturing the tube are reviewed. پرونده مقاله -
مقاله
4 - Effect of radial stress field component on the prediction of brittle failure in V-shaped notches under plate-mode combined loadingJournal of Mechanical Research and Application , شماره 2 , سال 10 , زمستان 2020