scholarly journals Interfacial Bonding Energy on the Interface between ZChSnSb/Sn Alloy Layer and Steel Body at Microscale

Materials ◽  
2017 ◽  
Vol 10 (10) ◽  
pp. 1128 ◽  
Author(s):  
Jianmei Wang ◽  
Quanzhi Xia ◽  
Yang Ma ◽  
Fanning Meng ◽  
Yinan Liang ◽  
...  
Keyword(s):  
Alloy Layer ◽  
Interfacial Bonding ◽  
Bonding Energy ◽  
Steel Body

Snap-Through Instability of Graphene Morphology on Substrates

2009 ◽  
Author(s):  
Zhao Zhang ◽  
Teng Li
Keyword(s):  
Surface Roughness ◽  
Electronic Properties ◽  
Substrate Surface ◽  
Interfacial Bonding ◽  
Bonding Energy ◽  
Surface Corrugation ◽  
Substrate Surface Roughness

We determine the graphene morphology regulated by substrates with herringbone surface corrugation. As the graphene/substrate interfacial bonding energy and the substrate surface roughness vary, the graphene morphology snaps between two distinct states: 1) closely conforming to the substrate and 2) remaining nearly flat on the substrate. Such a snap-through instability of graphene can potentially lead to desirable electronic properties to enable graphene-based devices.

A Numerical Investigation Into Cold Spray Bonding Processes

2014 ◽  
Vol 137 (1) ◽  
Author(s):  
Baran Yildirim ◽  
Hirotaka Fukanuma ◽  
Teiichi Ando ◽  
Andrew Gouldstone ◽  
Sinan Müftü
Keyword(s):  
Critical Velocity ◽  
Impact Velocity ◽  
Cold Spray ◽  
Cohesive Strength ◽  
Interfacial Bonding ◽  
Bonding Energy ◽  
Strength Parameter ◽  
Particle Impact ◽  
Particle Bonding ◽  
The Impact

Specific mechanisms underlying the critical velocity in cold gas particle spray applications are still being discussed, mainly due to limited access to in situ experimental observation and the complexity of modeling the particle impact process. In this work, particle bonding in the cold spray (CS) process was investigated by the finite element (FE) method. An effective interfacial cohesive strength parameter was defined in the particle–substrate contact regions. Impact of four different metals was simulated, using a range of impact velocities and varying the effective cohesive strength values. Deformation patterns of the particle and the substrate were characterized. It was shown that the use of interfacial cohesive strength leads to a critical particle impact velocity that demarcates a boundary between rebounding and bonding type responses of the system. Such critical bonding velocities were predicted for different interfacial cohesive strength values, suggesting that the bonding strength in particle–substrate interfaces could span a range that depends on the surface conditions of the particle and the substrate. It was also predicted that the quality of the particle bonding could be increased if the impact velocity exceeds the critical velocity. A method to predict a lower bound for the interfacial bonding energy was also presented. It was shown that the interfacial bonding energy for the different materials considered would have to be at least on the order of 10–60 J/m2 for cohesion to take place. The general methodology presented in this work can be extended to investigate various materials and impact conditions.

Interfacial Bonding Behavior of Stainless Steel / Carbon Steel in Cold Rolling Process

2020 ◽  
Vol 982 ◽  
pp. 121-127
Author(s):  
Shuo Li ◽  
Qing Dong Zhang
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Great Influence ◽  
Rolling Process ◽  
Interfacial Bonding ◽  
304 Stainless Steel ◽  
Nanoindentation Test ◽  
Real Contact Area ◽  
Steel Matrix ◽  
Bonding Quality

A cylindrical indenter was designed to simulate the roller and 304 stainless steel / Q235A carbon steel plate with different roughness were bonded together. The interfacial bonding behavior was investigated by SEM, ultrasonic “C” scanning detection and nanoindentation test. The result reveal that with the increase of contact pressure between interfaces, the atoms of dissimilar metals begin to diffuse across interfaces in some regions, then form island-like bonding regions, and eventually extend to the whole interface. There are no obvious cracks on the surface of stainless steel and carbon steel after deformation. The cold roll-bonding mechanism of stainless steel and carbon steel is that elements on both sides of the interface diffuse and form a shallow diffusion layer under pressure to ensure the joint strength, and the joint bonding strength is greater than the strength of carbon steel matrix. In addition, the surface morphology of base metal has a great influence on the interfacial bonding quality. The higher surface roughness values increases the hardening degree of rough peak, which makes real contact area difficult to increase and reduce the interfacial bonding quality.

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