Additively Manufactured 17-4PH Steel

Notch-insensitive Strength

Proposes a notch strength criterion for ductile alloys, revealing the physical nature of notch strength and enabling assessment of defect effects on tensile strength.

Haotian, Ma · Qu, Ruitao · Tan, Hua · Wu, Shaojie · Song, Kexing · Liu, Feng

Journal of Materials Science and Technology 2026

Specifications

as-printed and aged

{'zh': '', 'en': '-4'} PH steels

Advantages

Notch strength ratio (NSR) first increases then decreases with stress concentration factor