Tensile Deformation Temperature Impact on Microstructure and Mechanical Properties of AISI 316LN Austenitic Stainless Steel

被引：17

作者：

Xiong, Yi ^{[1
,2
]}

He, Tiantian ^{[1
]}

Lu, Yan ^{[1
]}

Ren, Fengzhang ^{[1
,2
]}

Volinsky, Alex A. ^{[3
]}

Cao, Wei ^{[4
]}

机构：

[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Peoples R China

[2] Collaborat Innovat Ctr Nonferrous Met, Luoyang 471023, Peoples R China

[3] Univ S Florida, Dept Mech Engn, Tampa, FL 33620 USA

[4] Univ Oulu, Nano & Mol Syst Res Unit, Oulu 90014, Finland

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2018年 / 27卷 / 03期

基金：

中国国家自然科学基金;

关键词：

AISI 316LN austenitic stainless steel; deformation-induced martensite transformation; mechanical properties; microstructure; LOW-CYCLE FATIGUE; STRAIN-RATE; MARTENSITIC-TRANSFORMATION; DYNAMIC RECRYSTALLIZATION; PLASTIC-DEFORMATION; BEHAVIOR; DEPENDENCE;

D O I：

10.1007/s11665-018-3234-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Uniaxial tensile tests were conducted on AISI 316LN austenitic stainless steel from - 40 to 300 A degrees C at a rate of 0.5 mm/min. Microstructure and mechanical properties of the deformed steel were investigated by optical, scanning and transmission electron microscopies, x-ray diffraction, and microhardness testing. The yield strength, ultimate tensile strength, elongation, and microhardness increase with the decrease in the test temperature. The tensile fracture morphology has the dimple rupture feature after low-temperature deformations and turns to a mixture of transgranular fracture and dimple fracture after high-temperature ones. The dominating deformation microstructure evolves from dislocation tangle/slip bands to large deformation twins/slip bands with temperature decrease. The deformation-induced martensite transformation can only be realized at low temperature, and its quantity increases with the decrease in the temperature.

引用

页码：1232 / 1240

页数：9

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