View source for 18561363. AUTOMOTIVE MEMBER AND RESISTANCE SPOT WELDING METHOD THEREFOR simplified abstract (JFE STEEL CORPORATION)

=AUTOMOTIVE MEMBER AND RESISTANCE SPOT WELDING METHOD THEREFOR=


==Organization Name==

[[:Category:JFE STEEL CORPORATION|JFE STEEL CORPORATION]]


[[Category:JFE STEEL CORPORATION]]

==Inventor(s)==

[[:Category:Katsutoshi Takashima of Tokyo (JP)|Katsutoshi Takashima of Tokyo (JP)]][[Category:Katsutoshi Takashima of Tokyo (JP)]]

[[:Category:Reiko Endo of Tokyo (JP)|Reiko Endo of Tokyo (JP)]][[Category:Reiko Endo of Tokyo (JP)]]

[[:Category:Lingling Yang of Tokyo (JP)|Lingling Yang of Tokyo (JP)]][[Category:Lingling Yang of Tokyo (JP)]]

[[:Category:Hiroshi Matsuda of Tokyo (JP)|Hiroshi Matsuda of Tokyo (JP)]][[Category:Hiroshi Matsuda of Tokyo (JP)]]

==AUTOMOTIVE MEMBER AND RESISTANCE SPOT WELDING METHOD THEREFOR - A simplified explanation of the abstract==


This abstract first appeared for US patent application 18561363 titled 'AUTOMOTIVE MEMBER AND RESISTANCE SPOT WELDING METHOD THEREFOR

'''Simplified Explanation:'''
The patent application describes an automotive member created through resistance spot welding, specifically focusing on the microstructure near the weld nugget's edge.

* The automotive member is formed by resistance-spot-welding multiple steel sheets, including high-strength steel sheets.
* The high-strength steel sheet has a specific chemical composition.
* The microstructure near the edge of the weld nugget consists of a composite microstructure containing ferrite, martensite, and tempered martensite.
* The average number density of Nb-based and Ti-based precipitate grains is specified in the patent.

'''Key Features and Innovation:'''
* Composite microstructure near the edge of the weld nugget
* Specific chemical composition of high-strength steel sheet
* Average number density of precipitate grains in the microstructure

'''Potential Applications:'''
This technology can be applied in the automotive industry for manufacturing high-strength automotive components.

'''Problems Solved:'''
This technology addresses the need for strong and durable automotive components that can withstand various stresses and conditions.

'''Benefits:'''
* Enhanced strength and durability of automotive components
* Improved resistance to wear and tear
* Potential for lighter weight components

'''Commercial Applications:'''
The technology can be utilized in the production of automotive bodies, chassis, and other structural components, potentially leading to more efficient and durable vehicles in the market.

'''Prior Art:'''
Readers can explore prior research on resistance spot welding techniques, high-strength steel compositions, and microstructure analysis in automotive components.

'''Frequently Updated Research:'''
Stay updated on advancements in resistance spot welding technology, high-strength steel materials, and microstructure analysis in automotive engineering.

'''Questions about Automotive Member and Resistance Spot Welding:'''
1. How does the composite microstructure near the edge of the weld nugget contribute to the overall strength of the automotive member?
2. What are the implications of using high-strength steel sheets with a specific chemical composition in resistance spot welding for automotive applications?


==Original Abstract Submitted==

An automotive member and a resistance spot welding method. The automotive member includes a resistance spot weld formed by resistance-spot-welding a plurality of steel sheets including at least one high strength steel sheet. The high strength steel sheet has a specific chemical composition. The microstructure in the vicinity of the edge of the nugget of the resistance spot weld is a composite microstructure containing ferrite at a volume fraction of 1 to 30%, martensite at a volume fraction of 1 to 50%, and tempered martensite at a volume fraction of 20% or more. The average number density of Nb-based precipitate grains having a grain diameter less than 0.09 μm and Ti-based precipitate grains having a grain diameter less than 0.09 μm is 10 or more grains per 100 μmin a sheet cross section.



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