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
贤惠的老黑完成签到 ,获得积分10
2秒前
ame1120发布了新的文献求助10
2秒前
倦梦还完成签到,获得积分10
4秒前
Sunrise完成签到,获得积分10
5秒前
yyyy发布了新的文献求助10
14秒前
自觉柠檬完成签到 ,获得积分10
18秒前
ergatoid完成签到,获得积分10
18秒前
Hao完成签到,获得积分10
19秒前
月亮煮粥完成签到,获得积分10
19秒前
欣欣完成签到 ,获得积分10
21秒前
现代的紫霜完成签到,获得积分10
22秒前
研学弟完成签到,获得积分10
23秒前
24秒前
jzmulyl完成签到,获得积分10
25秒前
cxdhxu完成签到 ,获得积分10
25秒前
852应助大橙子采纳,获得10
27秒前
务实雁梅完成签到,获得积分10
32秒前
酷波er应助廿伊采纳,获得30
33秒前
35秒前
张宝完成签到,获得积分10
37秒前
薄雪草完成签到,获得积分10
40秒前
大橙子发布了新的文献求助10
40秒前
快乐学习每一天完成签到 ,获得积分10
40秒前
薄荷味完成签到 ,获得积分0
42秒前
科研通AI2S应助笑林采纳,获得10
42秒前
无心的雅旋完成签到,获得积分10
43秒前
量子星尘发布了新的文献求助10
44秒前
Horizon完成签到 ,获得积分10
48秒前
Oliver完成签到 ,获得积分10
50秒前
Superman完成签到 ,获得积分10
53秒前
Tina酱完成签到 ,获得积分10
53秒前
琪琪完成签到,获得积分10
53秒前
双碳小王子完成签到,获得积分10
55秒前
smottom应助科研通管家采纳,获得10
57秒前
57秒前
明时完成签到,获得积分10
58秒前
杨瑞东完成签到 ,获得积分10
1分钟前
yyyy完成签到,获得积分10
1分钟前
缥缈的平卉完成签到 ,获得积分10
1分钟前
量子星尘发布了新的文献求助10
1分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
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 4038128
求助须知:如何正确求助?哪些是违规求助? 3575831
关于积分的说明 11373827
捐赠科研通 3305610
什么是DOI,文献DOI怎么找? 1819255
邀请新用户注册赠送积分活动 892655
科研通“疑难数据库(出版商)”最低求助积分说明 815022