Effects of cold rolling deformation on microstructure, hardness, and creep behavior of high nitrogen austenitic stainless steel

Abstract

Sun Shi-Cheng(孙世成) a)b) , Sun Gui-Xun(孙贵训) a) , Jiang Zhong-Hao(江忠浩) a) † , Ji Chang-Tao(季长涛) b) ‡ , Liu Jia-An(刘家安) a) , and Lian Jian-She(连建设) a) a)

Nanoindentation creep deformation behaviour of high nitrogen nickel-free austenitic stainless steel

“…Figure 2 gives the TEM bright field images of the solution-treated HNS and cold-rolled HNS [21]. The corresponding selected area electron diffraction patterns are shown in the inset in Figure 2.…”

“…Figure 1 gives the typical inverse pole figure (IPF) colour maps of the HNS [21]. The crystallographic orientations are shown in the inset in Figure 1(b).…”

“…With the nanoindentation method, the investigations on the dependence of nanoindentation creep deformation behaviours on the initial strain [16], loading rates [12,17], indenter tip [18], grain size [13,19] and holding time [20] have been extensively carried out and the underlying deformation mechanisms were explored. Though the understanding of the nanoindentation creep behaviour of the HNS has been achieved in our previous study through the strain rate sensitivity [21], the deformation mechanisms controlling the creep behaviour of the HNS at room temperature under a wide range of peak loads and how the microstructure evolution and peak load affect the nanoindentation creep deformation behaviour are still unclear.…”

Effect of Cold Deformation on Microstructure and Mechanical Behavior of Commercially Pure Grade 4 Titanium Strip

“…When the deformation increased to 42%, the hardness of the strip increased to HV310, so the hardness increase is reduced to 2.0%. The variation trends of the hardness and tensile strengths of different cold deformations were relatively close, and there were also the largest hardness increase in the initial deformation, which gradually decreases with the increase in cold deformation, showing an obvious phenomenon of work hardening [21][22][23].…”

Plastic flow behavior and its relationship to tensile mechanical properties of high nitrogen nickel-free austenitic stainless steel

“…[1][2][3][4][5][6][7][8][9][10][11][12] and thus are becoming an important class of engineering materials. The appropriate analysis of plastic flow behavior or stress-strain curve of HNSs is of critical importance for optimizing their microstructure and mechanical properties and extending their engineering applications.…”