摘要:2Cr13钢材从分类上来说应该是属于不锈钢,主要用于机械加工,比正常的不锈钢具有更好的性价比,因此在对耐腐蚀性要求不高的情况下,得到了更为广泛的应用。本文通过实验研究了淬火-回火(Q-T)热处理工艺对2Cr13钢性能及组织的影响,实验钢在850~1050℃下淬火,450~550℃回火,通过拉伸实验,硬度测试研究了力学性能,应用光学显微镜观察了实验钢的显微组织。通过分析实验结果得到如下结论:淬火加热温度为1050℃度时,实验钢的屈服强度和抗拉强度最大,延伸率最小。回火温度为400~450℃保温时间相同的情况下,随着温度的升高,实验钢的硬度与抗拉强度逐渐变大。在1050℃淬火,550℃回火,保温时间分别为30分钟,1个小时,2个小时的情况下,保温时间为一个小时实验钢硬度最大。82284
毕业论文关键词:2Cr13不锈钢,淬火-回火,显微组织,力学性能
Study on Q - T Technology of 2Cr13 Stainless Steel
Abstract:2Cr13 steel from the classification should be part of the stainless steel, mainly for mechanical processing, than the normal stainless steel has a better price, so the corrosion resistance is not demanding, has been more widely used。In this paper, the effects of quenching and tempering (QT) heat treatment on the properties and microstructure of 2Cr13 steel were studied。 The experimental steel was quenched at 850 ~ 1050 ℃ and tempered at 450 ~ 550 ℃。 The tensile strength was tested by tensile test and hardness test。 The microstructure of the test steel was observed by an optical microscope。 By analyzing the experimental results, it is concluded that the quenching temperature is 1050 ℃, the yield strength and tensile strength of experimental steel are the largest and the elongation is the smallest。 Tempering for the 400 ~ 450 ℃ holding time of the same circumstances, with the temperature rise, the experimental steel hardness and tensile strength gradually larger。 In 1050 ℃ quenching, 550 ℃ tempering, holding time were 30 minutes, 1 hour, 2 hours of the case, the holding time of one hour the maximum hardness of experimental steel
Key words: 2Cr13 stainless steel, quenching - tempering, microstructure, mechanical properties
目录
1 绪论 1
1。1 引言 1
1。2 2Cr13不锈钢概况 2
1。2。1 2Cr13不锈钢的定义 2
1。2。2 2Cr13不锈钢的特点特性及适用范围 2
1。2。3 Cr13型不锈钢简介 3
1。3 淬火回火机理 4
1。4 国内外研究概况 4
1。4。1 国外不锈钢的发展概况 4
1。4。2 国内不锈钢的发展概况 5
1。5 本文的研究目的和意义 7
2实验材料与方案 8
2。1 实验材料 8
2。2 实验方案 8
2。3 显微组织观察 9
2。4力学性能测试 9
3实验结果与分析 12
3。1 淬火温度对组织性能的影响 12
3。2 回火温度对组织性能的影响 14
3。3 回火时间对组织性能的影响