scholarly journals A COMPARATIVE STUDY ON SEISMIC PERFORMANCE OF STEEL TRUSS STRUCTURES EQUIPPED WITH STEEL OR ALUMINUM ALLOY BRB MEMBERS

Author(s):  
Tsutomu USAMI ◽  
Fumiaki IMASE ◽  
Junki FUNAYAMA ◽  
Tetsuya NONAKA
2020 ◽  
Vol 38 (9A) ◽  
pp. 1396-1405
Author(s):  
Arwa F. Tawfeeq ◽  
Matthew R. Barnett

The development in the manufacturing of micro-truss structures has demonstrated the effectiveness of brazing for assembling these sandwiches, which opens new opportunities for cost-effective and high-quality truss manufacturing. An evolving idea in micro-truss manufacturing is the possibility of forming these structures in different shapes with the aid of elevated temperature. This work investigates the formability and elongation of aluminum alloy sheets typically used for micro-truss manufacturing, namely AA5083 and AA3003. Tensile tests were performed at a temperature in the range of 25-500 ○C and strain rate in the range of 2x10-4 -10-2 s-1. The results showed that the clad layer in AA3003 exhibited an insignificant effect on the formability and elongation of AA3003. The formability of the two alloys was improved significantly with values of m as high as 0.4 and 0.13 for AA5083 and AA3003 at 500 °C. While the elongation of both AA5083 and AA3003 was improved at a higher temperature, the elongation of AA5083 was inversely related to strain rate. It was concluded that the higher the temperature is the better the formability and elongation of the two alloys but at the expense of work hardening. This suggests a trade-off situation between formability and strength. 


2017 ◽  
Vol 93 (5-8) ◽  
pp. 1929-1937 ◽  
Author(s):  
Chao Chen ◽  
Xiaolan Han ◽  
Shengdun Zhao ◽  
Fan Xu ◽  
Xuzhe Zhao ◽  
...  

2017 ◽  
Vol 199 ◽  
pp. 3380-3385 ◽  
Author(s):  
Hoa T.M. Luong ◽  
Volkmar Zabel ◽  
Werner Lorenz ◽  
Rolf G. Rohrmann

2022 ◽  
Vol 147 ◽  
pp. 107618
Author(s):  
Gaoyang Yu ◽  
Shuhai Chen ◽  
Zhiyi Zhao ◽  
Zhongling Wen ◽  
Jihua Huang ◽  
...  

2021 ◽  
Vol 1035 ◽  
pp. 602-607
Author(s):  
Zhi Hua Feng ◽  
Xian Fei Ding ◽  
Xin Feng ◽  
Hai Nan ◽  
Ai Bin Zhang

A comparative study of the surface contaminated layer formed by chemical reaction between ceramic-mold and titanium aluminum alloy castings or titanium alloy castings were carried out. The morphology, thickness and hardness of the surface contaminated layer were characterized by means of metalloscopy and microhardness measurement. The results show that surface contaminated layers formed between Ti-Al alloy castings and ceramic-mold, also formed between Ti alloy castings and ceramic-mold. The surface contaminated layers of Ti-Al alloy castings were continuous and compact, their thickness was about 0~90 μm. The surface contaminated layers of titanium alloy castings were not even, their thickness was 0~900 μm. Titanium alloy is more liable to react with the ceramic -mold than the Ti-Al alloy.


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