Tensile, fracture, and fatigue crack growth properties of a 3D printed maraging steel through selective laser melting

材料科学 选择性激光熔化 马氏体时效钢 延展性(地球科学) 金属间化合物 微观结构 奥氏体 极限抗拉强度 复合材料 断裂韧性 韧性 合金 冶金 蠕动
作者
Jyoti Suryawanshi,K.G. Prashanth,Upadrasta Ramamurty
出处
期刊:Journal of Alloys and Compounds [Elsevier BV]
卷期号:725: 355-364 被引量:219
标识
DOI:10.1016/j.jallcom.2017.07.177
摘要

The microstructure and room temperature mechanical properties of a18Ni (300) grade maraging steel (MS) fabricated using the selective laser melting (SLM) technique were studied, in both before- and after-aging conditions. Microstructural analysis reveals fine cellular structure in the as-SLM MS. Upon aging, nanoscale precipitation of intermetallic compounds occurs within the cells, which in turn, result in marked improvements in yield and ultimate tensile strengths, substantial reductions in ductility and fracture toughness, and a transition from dimple to quasi-cleavage fracture morphology. Overall, the mechanical performance, including the fatigue crack growth characteristics, of the SLM MS after aging is found to be similar to that of conventionally manufactured MS of the same grade. Importantly, the reduced ductility does not lead to a reduction in toughness, attributed to the stress induced martensitic transformation as a result of austenite presence in aged SLM MS. Although the SLM alloy possesses a mesostructure, which is a result of line-by-line laser scanning and layer-by-layer building of the components, no significant anisotropy in the mechanical behavior is observed, which is a result of strong metallurgical bonding between adjoining lines and layers. These results are discussed in terms of the meso- and micro-structural features.
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
Hailey完成签到,获得积分10
1秒前
微笑的冥幽完成签到,获得积分10
1秒前
阿玛特拉斯完成签到,获得积分10
1秒前
1秒前
tuanheqi应助Tao采纳,获得20
2秒前
yznfly应助煜钧采纳,获得30
3秒前
上官若男应助李军采纳,获得30
4秒前
4秒前
Yang发布了新的文献求助10
5秒前
揚Young完成签到,获得积分10
5秒前
7秒前
量子星尘发布了新的文献求助10
8秒前
8秒前
Skuld发布了新的文献求助10
8秒前
满意凡桃发布了新的文献求助10
8秒前
9秒前
9秒前
Methylation发布了新的文献求助10
11秒前
11秒前
12秒前
13秒前
13秒前
为你博弈发布了新的文献求助10
14秒前
nannan发布了新的文献求助10
14秒前
15秒前
小小博应助鱼鱼采纳,获得10
15秒前
ylver完成签到,获得积分10
16秒前
Cll完成签到 ,获得积分10
16秒前
NexusExplorer应助满意凡桃采纳,获得10
17秒前
17秒前
17秒前
看看看完成签到,获得积分10
17秒前
JL发布了新的文献求助10
18秒前
18秒前
77完成签到,获得积分10
20秒前
李军发布了新的文献求助30
20秒前
20秒前
21秒前
21秒前
muzi871203完成签到,获得积分10
22秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Toward a Combinatorial Approach for the Prediction of IgG Half-Life and Clearance 500
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
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 3969917
求助须知:如何正确求助?哪些是违规求助? 3514626
关于积分的说明 11175060
捐赠科研通 3249928
什么是DOI,文献DOI怎么找? 1795165
邀请新用户注册赠送积分活动 875617
科研通“疑难数据库(出版商)”最低求助积分说明 804891