不同固溶温度下16-5马氏体不锈钢组织及力学性能

林少阳; 向红亮; 郑开魁

doi:10.15980/j.tzzz.2020.07.005

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不同固溶温度下16-5马氏体不锈钢组织及力学性能
Microstructure and Mechanical Properties of 16-5 Martensitic Stainless Steel with Different Solution Temperatures
2020年40卷第7期页码：718-722
纸质出版日期： 2020 ，
DOI： 10.15980/j.tzzz.2020.07.005

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[1]林少阳,向红亮,郑开魁.不同固溶温度下16-5马氏体不锈钢组织及力学性能[J].特种铸造及有色合金,2020,40(07):718-722.

Lin Shaoyang, Xiang Hongliang, Zheng Kaikui. Microstructure and Mechanical Properties of 16-5 Martensitic Stainless Steel with Different Solution Temperatures[J]. Special Casting & Nonferrous Alloys, 2020,40(7):718-722.
[1]林少阳,向红亮,郑开魁.不同固溶温度下16-5马氏体不锈钢组织及力学性能[J].特种铸造及有色合金,2020,40(07):718-722. DOI： 10.15980/j.tzzz.2020.07.005.

Lin Shaoyang, Xiang Hongliang, Zheng Kaikui. Microstructure and Mechanical Properties of 16-5 Martensitic Stainless Steel with Different Solution Temperatures[J]. Special Casting & Nonferrous Alloys, 2020,40(7):718-722. DOI： 10.15980/j.tzzz.2020.07.005.

摘要

对16-5马氏体不锈钢在1 020～1 170℃下固溶处理2h

采用光学显微镜（OM）、扫描电镜（SEM）、Thermo-Calc、X射线多晶衍射仪（XRD）、洛氏硬度计、万能材料拉伸试验机、摆锤冲击试验机研究了不同温度固溶处理对其组织及力学性能的影响。结果表明

16-5马氏体不锈钢固溶组织为马氏体+铁素体;随固溶温度升高

铁素体增多

其抗拉强度和伸长率呈先增大后减小的趋势

其冲击功呈先减小后增大的趋势;抗拉强度、伸长率和冲击功分别在1 050、1 100、1 170℃时达到最大值。铁素体在马氏体不锈钢中可起协调变形与吸收冲击载荷的作用

但铁素体增多会割裂基体。

Abstract

The effects of solution temperature on the microstructure and mechanical properties of 16-5 martensitic stainless steel were investigated by optical microscope（OM）

scanning electron microscope（SEM）

ThermoCalc

X-ray diffraction（XRD）

Rockwell hardness tester

universal material tensile tester

pendulum impact tester.The results reveal that the microstructure of the 16-5 martensitic stainless steel is composed of martensite and ferrite.With the solution temperature increasing

the amount of ferrite is increased

and tensile strength and elongation of the 16-5 martensitic stainless steel are increased firstly and then decreased

menahwile

impact energy of the stainless steel is decreased firstly and then increased.The tensile strength

elongation and impact energy reach the maximum values at 1 050℃

1 100℃

and 1 170℃

respectively.Ferrite can coordinate deformation and absorb shock load in martensitic stainless steel

however the increase of ferrite would play the role of seperating the matrix.

关键词

马氏体不锈钢固溶温度组织力学性能

Keywords

Martensitic Stainless SteelSolution TemperatureMicrostructureMechanical Properties

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