Effect of Deformation on Microstructure of 301L Stainless Steel

Li, J. X.; Luan, Dao Cheng; Li, Y.; Zuo, Cheng Ming; Deng, Tian Xin; Ren, Yang; Wang, Z. Y.

doi:10.1134/s1029959921010094

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…(b)) are indexed {111}, {200}, {220}, and {311} planes of γ-Fe phase, suggesting the formation of a polycrystalline microstructure comprised FCC austenite. Compared with a previous report,51 the high-resolution TEM image at the [1 10] zone axis (Figure4(c)) showed an interplanar spacing of (111) plane (0.208 nm) in γ-Fe phase, further confirming that those nanograins comprised austenite with recrystallisation occurrence.…”

supporting

confidence: 56%

Impact of austenite nanograins induced by sliding friction on interfacial strength during ultrasonic welding

Chu,

Sun,

Chen

et al. 2024

Science and Technology of Welding and Joining

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This study investigated the effect of nanograin formation on joint strength through sliding friction during ultrasonic welding (USW). The nanograined austenite phase would induce the surface strengthening effect, potentially impeding the bonding process. A bonding strength exceeded 2000 N within a short welding duration of 2.5 s. Interestingly, the strength was attributed to ultrafine-grained interfacial microstructure resulting from the plastic flow during processing. This unique nanograined microstructure formed from dynamic recrystallisation unexpectedly facilitated the bond formation rather than hindering the bonding process. This study gained insights into the critical interfacial microstructure required for the USW of metals and alloys with high melting temperatures.

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supporting

confidence: 56%

Impact of austenite nanograins induced by sliding friction on interfacial strength during ultrasonic welding

Chu,

Sun,

Chen

et al. 2024

Science and Technology of Welding and Joining

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“…Therefore, it is of great significance to study the high-temperature deformation behavior of 301 L stainless steel and to clarify the reasonable hot processing area. [6][7][8][9][10] In addition, due to element segregation during the casting process of 301 L stainless steel, the existence of δ-ferrite at this zone is prone to produce phase boundary cracking in rolling, and a large amount of δ-ferrite can be dissolved after diffusion annealing. [11,12] Now, many researchers have studied the high-temperature properties and microstructure changes of materials.…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior of 301L Stainless Steel and Dissolution Behavior of δ‐Ferrite During Heat Treatment

Liu

Wang

et al. 2023

steel research int.

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The hot deformation behavior of 301 L stainless steel is investigated at 1000–1250 °C and 0.1–50 s−1. Deformation characteristics are studied through compressive stress–strain curves and constitutive equations. According to the dynamic material model and a series of diffusion annealing experiments, the hot processing map of 301 L stainless steel is established to determine the suitable processing domain. The results show that the stable domain is located in 1085–1240 °C and high strain rate range of 4.5–50 s−1, and the strain rate is the main factor affecting the machinability. Based on the hot compression tests, δ‐ferrite gradually forms a network structure with the increase of temperature; however, it can be inhibited at high strain rate. Therefore, it is necessary to reduce the temperature and increase the strain rate in the actual processing of the machinable area. It is found that diffusion annealing can reduce the content of δ‐ferrite from 12% to 0.67%, and the dissolution of δ‐ferrite is controlled by the diffusion of Cr and Ni, especially noticeable at the interface between γ and δ phase. Finally, the optimum diffusion annealing process parameter is determined at 1300 °C and 10 min.

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Effect of Ni content on microstructure and mechanical properties for cold rolled 301L stainless steel

Sheng

Wang

2023

Ferroelectrics

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Effect of Deformation on Microstructure of 301L Stainless Steel

Cited by 3 publications

References 5 publications

Impact of austenite nanograins induced by sliding friction on interfacial strength during ultrasonic welding

Impact of austenite nanograins induced by sliding friction on interfacial strength during ultrasonic welding

Hot Deformation Behavior of 301L Stainless Steel and Dissolution Behavior of δ‐Ferrite During Heat Treatment

Effect of Ni content on microstructure and mechanical properties for cold rolled 301L stainless steel

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