ADVANCED MATERIALS & PROCESSES | MAY 2026 9 The team examined whether fatigue resistance can be drastically improved by designing alloys in which plastic deformation is engineered to remain small and uniformly distributed rather than intense and highly localized. Researchers used high-throughput automated high-resolution digital image correlation, a technique developed in Stinville’s laboratory, to map plastic deformation with extreme spatial resolution across large material regions. Unlike conventional methods, which must trade field of view for resolution, this approach captures fine-scale deformation over wide areas. These measurements reveal a delocalized mode of plastic deformation involving processes called dynamic plastic delocalization. Mechanical testing showed it to be directly associated with greatly enhanced fatigue resistance. Computational modeling was then used to clarify the roles of chemistry and ordering on the observed delocalized plasticity in the tested materials. illinois.edu. STUDYING STAINLESS STEEL FINISHING Researchers at Tohoku Uni- versity, Japan, are studying the process of surface grinding that is used to achieve the sleek appearance of stainless steel— and how this finishing process reduces corrosion resistance in the material. They found that grinding leaves fine scratches on the surface, which can cut into tiny manganese sulfide particles embedded within the steel. Where these scratches intersect with manganese sulfide particles, the surface becomes more vulnerable to damage. Using 304 stainless steel, the team examined corrosion behavior in saltwater conditions. Grinding alone did not trigger corrosion. Instead, pitting occurred only in regions containing manganese sulfide particles. These results indicate that surface scratches by themselves are insufficient SEM image and elemental maps of MnS inclusions on a stainless-steel surface subjected to rough grinding. Courtesy of Siqi Wang, Masashi Nishimoto, and Izumi Muto. to weaken corrosion resistance and that MnS inclusions play a key role in the process. Researchers then analyzed how grinding alters both the protective surface layer and the MnS inclusions. The chemical composition of the protective layer remained largely unchanged. But the MnS inclusions suffered significant damage. The scientists hope that their insights will lead to improved guidance for grinding and surface-treatment methods that minimize risk. www.tohoku.ac.jp. with our ENHANCED PRODUCT SELECTOR (201) 343-8983 · main@masterbond.com · www.masterbond.com Filter by specific chemistry and specifications Verify compliance with industrial certifications Pinpoint the ideal material for your application Filters Product Applications Product Type Certifications Electrical Conductivity Thermal Conductivity Optical Clarity Cryogenically Serviceable Product Selector Certifications Applications EP4EN-80 One component flowable epoxy cures at 80°C · Bonding · Encapsulation · Potting UV17Med UV curable adhesive offers excellent adhesion to TPUs MasterSil 323 Two component addition cured silicone system · NASA Low Outgassing · RoHS Compliant · Bonding · Sealing · Coating · Gap Filling · ISO 10993-5 for Cytotoxicity · RoHS Compliant · Bonding · Sealing · Encapsulation · Coating · Gap Filling · Potting · RoHS Compliant Visit www.masterbond.com/product-selector
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