The microstructure and mechanical properties of 316L austenitic stainless steel prepared by forge and laser melting deposition

材料科学 方向错误 冶金 微观结构 奥氏体 奥氏体不锈钢 极限抗拉强度 晶界 晶体孪晶 等轴晶 打滑(空气动力学) 粒度 复合材料 腐蚀 物理 热力学
作者
Yajie Li,Chengrui Ma,Fengming Qin,Huiqin Chen,Xiaodong Zhao,Rui Liu,Shan Gao
出处
期刊:Materials Science and Engineering A-structural Materials Properties Microstructure and Processing [Elsevier BV]
卷期号:870: 144820-144820 被引量:36
标识
DOI:10.1016/j.msea.2023.144820
摘要

In this study, the 316L austenitic stainless steel blocks were prepared by forge and laser melting deposition (LMD). To clarify the effect of deposition strategy on microstructure and mechanical properties of 316L samples, three different deposition strategies (30°, 67° and 90°) are selected. The results showed that the molten pool of LMDed sample consists of a large number of coarse columnar grains and a few irregular equiaxed grains, which contains plentiful cellular and fiber sub-structures with an average size of ∼4 μm. The LMD process can significantly improve the comprehensive mechanical properties perpendicular to the build direction of 316L austenitic stainless steel, which was mainly attributed to sub-structural strengthening, but also slightly due to the local misorientation and texture distribution. The yield strength and ultimate tensile strength of R90 sample increased to 484.0 MPa and 627.6 MPa from 305.3 MPa to 601.4 MPa of as-forged 316L, and its elongation has a negligible reduction. The sub-structures produced during solidification have the same fine grain strengthening effect as the high-angle grain boundary, and the yield strength and average size of sub-structures conform to the Hall-Petch relationship. The deterioration of the plastic deformation capacity of the R67 sample is attributed to the larger thermal stress and texture distribution with a certain hard orientation. The plastic deformation of as-forged sample is mainly coordinated by multi-system slip, while twinning and slip are activated together during deformation of LMDed 316L austenitic stainless steel. The grain boundary map indicated that the strain location preferentially appears along cell wall of sub-structures, which promotes the formation of sub-grain boundaries during deformation of LMDed samples.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
线性谐振子完成签到,获得积分10
2秒前
2秒前
传奇3应助WY采纳,获得10
3秒前
希望天下0贩的0应助Persist采纳,获得10
3秒前
LRR发布了新的文献求助10
4秒前
朴实白卉发布了新的文献求助10
4秒前
学术飞舞完成签到,获得积分10
4秒前
4秒前
st发布了新的文献求助10
4秒前
英俊的铭应助猪猪hero采纳,获得10
4秒前
阳娅丽发布了新的文献求助10
5秒前
宁阿霜发布了新的文献求助10
5秒前
Lucas应助勤劳茗采纳,获得10
5秒前
6秒前
朱大帅完成签到,获得积分10
6秒前
麦克阿宇发布了新的文献求助10
6秒前
6秒前
6秒前
李爱国应助夏夏采纳,获得10
7秒前
端庄千青发布了新的文献求助10
7秒前
桐桐应助Yolo采纳,获得10
7秒前
7秒前
77完成签到,获得积分20
7秒前
美满花生发布了新的文献求助10
8秒前
青阳完成签到,获得积分10
8秒前
8秒前
左右完成签到,获得积分10
9秒前
9秒前
11秒前
11秒前
77发布了新的文献求助10
12秒前
12秒前
领导范儿应助潇洒的映天采纳,获得10
12秒前
山晴完成签到 ,获得积分10
12秒前
crane发布了新的文献求助10
12秒前
鹿lu应助zhaxiao采纳,获得10
13秒前
loser发布了新的文献求助10
13秒前
13秒前
13秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3974602
求助须知:如何正确求助?哪些是违规求助? 3519026
关于积分的说明 11196787
捐赠科研通 3255127
什么是DOI,文献DOI怎么找? 1797693
邀请新用户注册赠送积分活动 877100
科研通“疑难数据库(出版商)”最低求助积分说明 806130