Significant Strengthening Effect on Martensitic Stainless Steel by Repetitive High-Stress Loading at Ultralow Temperature

The effect of repetitive high-stress loading (RHSL) at ultralow temperature on the microstructure and mechanical properties of S04 martensitic steel was studied. RHSL significantly increases the yield strength of S04 steel from 1220 to 1650 MPa and raises the tension elastic modulus from 170 to 207....

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Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2020, Vol.51 (1), p.76-81
Hauptverfasser:	Liao, Hengcheng, Xu, Heting, Tang, Jingfan, Huo, Shihui, Huang, Daoqiong, Chen, Hui
Format:	Artikel
Sprache:	eng
Schlagworte:	Characterization and Evaluation of Materials Chemistry and Materials Science Communication Elastic deformation Martensite Martensitic stainless steels Materials Science Mechanical properties Metallic Materials Modulus of elasticity Nanotechnology Plastic deformation Structural Materials Surfaces and Interfaces Thin Films
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Beschreibung
Zusammenfassung:	The effect of repetitive high-stress loading (RHSL) at ultralow temperature on the microstructure and mechanical properties of S04 martensitic steel was studied. RHSL significantly increases the yield strength of S04 steel from 1220 to 1650 MPa and raises the tension elastic modulus from 170 to 207.5 GPa with small plastic deformation. This most efficient strengthening mechanism involves the evolution of dislocation patterns and the formation of martensite twins.
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-019-05535-z