Energy dissipation and notch sensitivity of mild steel at different strain rates and temperatures

Gupta, Manish Kumar; Singh, Nilamber Kumar; Gupta, Neelam

doi:10.1016/j.ijimpeng.2023.104610

Cited by 5 publications

(1 citation statement)

References 46 publications

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“…Notably, steel, characterized by its elevated strength and hardness attributes, substantially influenced the distribution of forces and stress along the interface. This, in turn, rendered the initiation of cracks during the collision phase, consequently impeding the immediate bonding of interfacing materials [33]. Additionally, the ductility of steel, as compared to the brittleness of acrylic, introduces a great effect in influencing the angle of collision, which had a significant impact on the interfacial waves.…”

Section: The Effect Of Backing Materials (Steel Versus Acrylic Backing)mentioning

confidence: 99%

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Abdelmaola,

Thurston,

Panton

et al. 2024

Metals

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This study demonstrates that the thickness of the target and its backing condition have a powerful effect on the development of a wave structure in impact welds. Conventional theories and experiments related to impact welds show that the impact angle and speed of the flyer have a controlling influence on the development of wave structure and jetting. These results imply that control of reflected stress waves can be effectively used to optimize welding conditions and expand the range of acceptable collision angle and speed for good welding. Impact welding and laser impact welding are a class of processes that can create solid-state welds, permitting the formation of strong and tough welds without the creation of significant heat affected zones, and can avoid the gross formation of intermetallic in dissimilar metal pairs. This study examined small-scale impact using a consistent launch condition for a 127 µm commercially pure titanium flyer impacted against commercially pure copper target with thicknesses between 127 µm and 1000 µm. Steel and acrylic backing layers were placed behind the target to change wave reflection characteristics. The launch conditions produced normal collision at about 900 m/s at the weld center, with decreasing impact speed and increasing angle moving toward the outer perimeter. The target thickness had a large effect on wave morphology, with the wave amplitude increasing with target thickness in both cases, peaking when target thickness is about twice flyer thickness, and then falling. The acrylic backing showed a consistently smaller unwelded central zone, indicating that impact welding is possible at a smaller angle in that case. Strength was measured in destructive tensile testing. Failure was controlled by the breakdown of the weaker of the two base metals over all thicknesses and backings. This demonstrates that laser impact welding is a robust method for joining dissimilar metals over a range of thicknesses.

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Section: The Effect Of Backing Materials (Steel Versus Acrylic Backing)mentioning

confidence: 99%

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Abdelmaola,

Thurston,

Panton

et al. 2024

Metals

View full text Add to dashboard Cite

show abstract

Experimental and numerical research of aircraft tire debris impact on landing gear brake pipe

Lian,

Yi,

Wang

et al. 2024

Aerospace Science and Technology

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Mechanical properties of Q235 and 20# steel after CO2 fire extinguishing treatment

Tan,

Wang,

Feng

et al. 2024

Journal of Constructional Steel Research

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Energy dissipation and notch sensitivity of mild steel at different strain rates and temperatures

Cited by 5 publications

References 46 publications

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Experimental and numerical research of aircraft tire debris impact on landing gear brake pipe

Mechanical properties of Q235 and 20# steel after CO2 fire extinguishing treatment

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