Original scientific paper

https://doi.org/https://doi.org/10.64486/m.65.4.4

Microstructural Evolution of the Hot Rolling Interface in 304 Stainless Steel/Q235 Carbon Steel Clad Plates for Microphone Pop Filters

Bin Sun ; School of Music and Dance, Harbin University, China *

* Corresponding author.

Abstract

In response to the comprehensive requirements of microphone pop filters for ma-terials' corrosion resistance and structural stability, 304 stainless steel/Q235 car-bon steel clad plates have emerged as the preferred choice due to their superior performance and the hot rolling process is crucial to ensuring the bonding quality of the interface. Taking this clad plate as the research object, this study systemati-cally investigates the influence laws of the hot rolling process on the evolution of interface microstructure and bonding characteristics by comparing annealed samples with double hot-rolled ones. The results indicate that a sound metallur-gical bond is formed between the 304 layer and the Q235 layer, with the micro-structures on both sides of the interface being austenite and ferrite + pearlite, re-spectively; a ferrite decarburized layer with a thickness of approximately 140 μm forms on the Q235 side. After double hot rolling, the grains of the clad plate are significantly refined.

Keywords

hot rolling process; 304 stainless steel; Q235 carbon steel; interface microstructure; microphone pop filter

Hrčak ID:

347931

URI

https://hrcak.srce.hr/347931

Publication date:

1.10.2026.

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