Effect of Niobium on Phase Transformations, Mechanical Properties and Corrosion of Supermartensitic Stainless Steel

Abstract ATI 201 HP is a 200-series, Cr-Mn-Ni austenitic stainless steel. It is comparable to the Cr-Ni stainless steel types 301, 304, and 304L in many respects, and can even provide some advantages over the 18-8 grades in certain applications. Because it possess a very desirable combination of economy plus good mechanical properties and corrosion resistance, it has been used in a wide variety of consumer and transportation applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1332. Producer or source: ATI.

Download Full-text

Mechanical properties and corrosion resistance of two-phase stainless steel with silicon

Metal Powder Report ◽

10.1016/s0026-0657(97)89737-8 ◽

1998 ◽

Vol 53 (1) ◽

pp. 36

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Corrosion Resistance ◽

Two Phase ◽

Mechanical Properties And Corrosion

Download Full-text

Study on the Perspective of Mechanical Properties and Corrosion Behaviour of Stainless Steel, Plain and TMT Rebars

10.5772/intechopen.101388 ◽

2021 ◽

Author(s):

Indrajit Dey ◽

Pallabi Manna ◽

Muralidhar Yadav ◽

Nisith Kumar Tewary ◽

Jayanta Kumar Saha ◽

...

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Transition Zone ◽

Corrosion Behaviour ◽

Hardness Profile ◽

Internal Core ◽

Nyquist Plots ◽

Acidic Nature ◽

Mechanical Properties And Corrosion ◽

Hcl Solution

In the present research, the effects of various alloying elements and microstructural constituents on the mechanical properties and corrosion behaviour have been studied for four different rebars. The microstructures of stainless steel and plain rebar primarily reveal equiaxed ferrite grains and ferrite-pearlite microstructures, respectively, with no evidence of transition zone, whereas tempered martensite at the outer rim, followed by a narrow bainitic transition zone with an internal core of ferrite-pearlite, has been observed for the thermomechanically treated (TMT) rebars. The hardness profiles obtained from this study display maximum hardness at the periphery, which decreases gradually towards the centre, thereby providing the classical U-shaped hardness profile for TMT rebars. The tensile test results confirm that stainless steel rebar exhibits the highest combination of strength (≈755 MPa) and ductility (≈27%). It has been witnessed that in Tafel plots, the corrosion rate increases for all the experimental rebars in 1% HCl solution, which is well expected because the acid solutions generally possess a higher corrosive environment than seawater (3.5% NaCl) due to their acidic nature and lower pH values. However, all the experimental results obtained from Tafel and Nyquist plots correlate well for both 1% HCl and 3.5% NaCl solutions.

Download Full-text