Influence of Thermomechanical Treatments on Mechanical Properties and Fracture Mechanism of High-Nitrogen Austenitic Steel

被引：0
|
作者：
Moskvina, Valentina [1 ,2 ]
Astafurova, Elena [1 ]
Maier, Galina [1 ]
Melnikov, Eugene [1 ]
Astafurov, Sergey [1 ]
Burlachenko, Alexander [1 ]
Galchenko, Nina [1 ]
机构：
[1] Inst Strength Phys & Mat Sci SB RAS, Tomsk 634055, Russia
[2] Natl Res Tomsk Polytech Univ, Tomsk 634050, Russia
来源：
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2017 (AMHS'17) | 2017年 / 1909卷
基金：
俄罗斯科学基金会;
关键词：
HIGH-PRESSURE TORSION;
D O I：
10.1063/1.5013824
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, the mechanical properties and fracture mechanisms of the high-nitrogen austenitic steel Fe-17Cr-10Mn-7Ni-0.95V-0.8N-0.1C (in wt %) processed by different thermomechanical treatments are investigated. Cold rolling and short-time solid solution hardening contribute to the formation of a rather homogeneous fine-grained structures in the steel, which possess high strength, sufficient plasticity and exhibit excellent product of strength and elongation (sigma(YS) = 540-570 MPa, sigma(UTS) = 900-950 MPa, EL = 36-37%, PSE = 33-35 GPa %) in comparison with cold-rolled specimens possessing high strength properties, but extremely low elongation (sigma(YS) = 1200 MPa, sigma(UTS) = 1650 MPa, EL = 1%, PSE = 1.7 GPa %).
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页数：5
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