Low cycle fatigue and creep-fatigue performance of 316SS formed by selective laser melting

被引：2

作者：

Pan, Lingfeng ^{[1
,2
]}

Ding, Peishan ^{[1
,2
]}

Kong, Dezhou ^{[1
,2
]}

Liu, Lijun ^{[1
,2
,3
]}

Zheng, Xiaotao ^{[1
,2
,3
]}

机构：

[1] Wuhan Inst Technol, Sch Mech & Elect Engn, Hubei Prov Key Lab Chem Equipment Intensificat & I, Wuhan, Peoples R China

[2] Wuhan Inst Technol, Hubei Prov Engn Technol Res Ctr Green Chem Equipme, Sch Mech & Elect Engn, Wuhan, Peoples R China

[3] Wuhan Inst Technol, Sch Mech & Elect Engn, Hubei Prov Key Lab Chem Equipment Intensificat & I, Wuhan 430205, Peoples R China

来源：

MATERIALS AT HIGH TEMPERATURES | 2023年 / 40卷 / 03期

基金：

中国国家自然科学基金;

关键词：

SLM; LCF; ratcheting; creep; 316SS; SLM PROCESS PARAMETERS; MECHANICAL-PROPERTIES; STEEL; MICROSTRUCTURE; BEHAVIOR; HARDNESS;

D O I：

10.1080/09603409.2023.2205761

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fatigue and creep-fatigue properties of 316SS formed by selective laser melting (SLM) were investigated, considering the effects of different peak stresses, stress rates and peak-holding times on the ratcheting and creep-ratcheting behaviour of SLM 316 SS specimens at different sampling angles (0 degrees, 90 degrees) and high temperatures (550 degrees C, 650 degrees C, 750 degrees C). Results show that the 90 degrees specimens exhibited better fatigue life than that of the 0 degrees specimens. Moreover, the ratcheting evolution can be divided into three stages, but the first stage is very short and the main ratcheting behaviour takes place in the second and third stages. Interestingly, it was found that at stress rates above 10 MPa/s, the ratcheting evolution curves are highly overlapping. Furthermore, the creep-fatigue interaction promotes the evolution of material damage. Besides, creep increases the total strain of 316SS even with a short dwell time (0.5 min).

引用

页码：230 / 240

页数：11

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