Processing 20 Ply Clad Plate by Accumulative Clad Rolling from Stainless Steel/Aluminum/Aluminum Alloy…/Stainless Steel Sheets

2009 ◽  
Vol 610-613 ◽  
pp. 454-458
Author(s):  
Yu Hua Pang ◽  
Jia Wei Yuan ◽  
Qi Sun ◽  
Yang Lei Hu

According to the principle of accumulative roll bonding(ARB),the 20 ply clad sheet from austenitic stainless steel (STS304)/pure aluminum(Al1060)/aluminum alloy(Al3003) …/ austenitic stainless steel (STS304)sheets with excellent heat, anti-corrosion and mechanical properties of stainless steel and the high thermal and electrical conductivities of aluminum was fabricated by accumulative clad rolling (ACR). Well-bonded clad plate was successfully obtained in the procedure: Al1060 sheets with a thickness of 0.5mm and Al3003 sheets 0.5mm thick and STS304 sheets 0.5mm thick were employed. Basic clad sheet from different ply Al1060/Al3003 sheets was obtained with an initial rolling reduction of 44% at 450°C followed by annealing at 300°C, then ACR was with reduction of 50% at 550°C from STS304 on each side. The stretch property, bonding property, microscopic structure and interface composition were measured and analyzed. It was indicated that the best clad sheet had bonding strength of 129MPa and stretch strength of 225MPa. was of 129Mpa bonding strength and 225Mpa stretch strength. At the end,STS304 sheet with thickness of 3mm which being used in superior quality kitchenware and finishing material and so on was taken the place of the clad sheet from STS304 sheets of 1mm and Al1060 of 1mm and Al3003 of 1mm. Therefore, it decreased by 44% in weight and economizes rare metal elements Cr and Ni of 66% in weight.

Author(s):  
Masao Sakane ◽  
Akihiko Inoue ◽  
Xu Chen ◽  
Kwang Soo Kim

This paper studies the cyclic ratcheting for two materials under multiaxial stress state. The two materials are SUS304 austenitic stainless steel and A1070 pure aluminum. The former material is known as a material that gives strong additional hardening and the latter material shows little additional hardening under nonproportional cyclic loading. The ratcheting behavior under 12 stress-strain waveforms was extensively studied using hollow cylinder specimen. Ratcheting strain depended on the material and stress-strain waveform. Anisotropic ratcheting was found in A1070 but isotropic ratcheting was observed in SUS304 steel.


2017 ◽  
Vol 750 ◽  
pp. 26-33
Author(s):  
Alaa Abu Harb ◽  
Ion Ciuca ◽  
Robert Ciocoiu ◽  
Mihai Vasile ◽  
Adrian Bibis ◽  
...  

The welding technique used for ASIS 304 and 316L austenitic stainless steel sheets both with a thickness of 3mm is gas tungsten arc welding (TIG) and manual metal arc welding (MMAW). Mechanical properties that were verified include: hardness test and tensile test before welding and after it. The welding process was done on two types of specimens: with a central hole and without hole. We concluded that there was a decrease in the properties of tensile for both specimens with central hole, and 316L had tensile characteristics better than 304 when using the technique TIG. As for 304, it had tensile characteristics better than 316L when using the technique MMAW. We also concluded that the existence of central holes had an influence on the hardness characteristics on both types. The hardness increased in 304 but decreased in 316L. The welding process also showed that there was no influence of MMAW on hardness on both specimens. However it showed that there was no influence of TIG on the hardness for 304, but for 316L values increased.


2017 ◽  
Vol 20 (2) ◽  
pp. 291-302 ◽  
Author(s):  
Mohammad Reza Khanzadeh Ghareh Shiran ◽  
Haimd Bakhtiari ◽  
Seyed Ali-Asghar Akbari Mousavi ◽  
Gholamreza Khalaj ◽  
Seyed Majid Mirhashemi

2012 ◽  
Vol 500 ◽  
pp. 690-695 ◽  
Author(s):  
Fei Han ◽  
Gao Yong Lin ◽  
Qian Li ◽  
Rui Fen Long ◽  
Da Shu Peng ◽  
...  

In this paper, a kind of 304 austenitic stainless steel sheets has been investigated, and systemic tests were conducted to study the law and mechanics of work hardening of 304 austenitic stainless steel. The results of microstructure analyzing of 304 austenitic stainless steels showed that when it was deformed by means of tensile testing at room temperature, obvious work hardening was caused by the changes of structure during the deformation. The strain-induced α-martensite, ε-martensite and deformation twins enhanced flow stress obviously, which is the main reason for the strong work hardening in FCC metals and alloys with low stacking fault energy as 304 austenitic stainless steel.


2012 ◽  
Vol 217-219 ◽  
pp. 395-399
Author(s):  
Guo Ming Cui ◽  
Xing Xia Li ◽  
Jian Min Zeng

Bimetal of high-tin aluminum alloy and steel was fabricated by cold-rolling process; microstructure, bonding strength and bonding mechanism for bonding interface of the bimetal were investigated under cold-rolling and recrystallization annealing state, respectively. Experimental results indicate that tin phase of bimetal in cold-rolling state shows a belt type distribution, however, it, in recrystallization annealing state, is uniformly distributed just like some “isolated islands”. A well bonding interface, between layers of high–tin aluminum alloy and pure aluminum, can be obtained, and it is difficult to distinguish one layer from the other; but the interface, between layers of low-carbon steel back and pure aluminum, is clear and uneven. And meanwhile, bonding mechanism of bimetal interface, in cold-rolling state, is cold pressure welding and mechanical occluding, But it, in recrystallization annealing state, is cold pressure welding, mechanical occluding, and metallurgic bonding. After recrystallization annealing, at 350°C for 2h,the bonding strength of bimetal approaches to 92.4MPa, which is about 26% higher than that of cold-rolling state.


Sign in / Sign up

Export Citation Format

Share Document