Mechanical Properties and Defective Effects of 316LN Stainless Steel by First-Principles Simulations

Elastic Properties of FeCr20Ni8Xn (X = Mo, Nb, Ta, Ti, V, W and Zr) Austenitic Stainless Steels: A First Principles Study

“…On the one hand, the addition of Mo, Nb, Ta, Ti, V, W and Zr increase the bulk modulus (B). Higher values of bulk modulus (B) correspond to stronger atomic bonds, which results in better resistance to various forms of localized corrosion, such as intergranular corrosion, pitting corrosion and stress-corrosion cracking [10,[12][13][14]. On the other hand, these alloy elements might decrease the shear modulus (G).…”

“…Based on the simulated shear modulus (G) and bulk modulus (B), we proposed a design map for FeCr 20 Ni 8 based alloys, aiming to provide a basis for the design of high-performance austenitic stainless steels.It should be noted that a lower value of B means the atomic bond is weaker. Consequently, materials with a low value of B exhibit relatively poor resistance to various forms of localized corrosion (such as intergranular corrosion, pitting corrosion and stress-corrosion cracking) [10,[12][13][14]. Furthermore, Clerc et al have demonstrated the hardness of the annealed metal is proportional to G [15].…”

“…Furthermore, Clerc et al have demonstrated the hardness of the annealed metal is proportional to G [15]. It is commonly known that high a value of the B/G ratio (>1.75) often results in ductility, while a low value of the B/G ratio (<1.75) often results in brittleness [10,11,14,[16][17][18].Potentially, alloying elements (such as Mo, Nb, Ta, Ti, V, W and Zr) might be added into austenitic stainless steels to suppress the Cr-carbides and Cr-carbontrides. In addition to the precipitation processes, the elastic properties of the iron matrix would also be influenced.…”

“…Furthermore, Clerc et al have demonstrated the hardness of the annealed metal is proportional to G [15]. It is commonly known that high a value of the B/G ratio (>1.75) often results in ductility, while a low value of the B/G ratio (<1.75) often results in brittleness [10,11,14,[16][17][18].…”

Strain Compensation Constitutive Model and Parameter Optimization for Nb-Contained 316LN

“…316LN is a kind of single phase austenitic stainless steel with low stacking fault energy (SFE). It is widely used in nuclear power plant components for good performance on thermal mechanical properties, corrosion resistance, irradiation resistance, and welding [1][2][3][4][5][6]. Carbide and nitride precipitation (such as Cr 23 C 6 , Cr 2 N) during service process lead to a reduction of corrosion resistance and creep rupture ductility [7].…”