Spatially propagating martensitic transformation enables strength–ductility synergy in gradient-structured L-PBF 316L stainless steel

Structural integrity, particularly porosity and tensile residual stresses, remains a major challenge limiting the application of additively manufactured alloys. Here, ultrasonic impact treatment (UIT) was employed on laser powder bed fused (L-PBF) 316L stainless steel to engineer a gradient hierarch...

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Autori principali:	Tengkuo Sun, Luqing Cui, Qimin Shi, Yansong Li, Tongbo Wei, Yuehua Feng, Shuaichao Lou, Yuanyuan Wang, Shilei Ni, Shiqiang Wang, Longlong Guo, Shoufeng Yang, Weifeng He
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	Taylor & Francis Group 2026-12-01
Serie:	Virtual and Physical Prototyping
Soggetti:	Laser powder bed fusion Ultrasonic impact treatment Gradient heterogeneous nanostructure Deformation-induced martensitic transformation Hetero-deformation-induced hardening
Accesso online:	https://www.tandfonline.com/doi/10.1080/17452759.2026.2697143
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