Investigation on dynamic hardness and high strain rate indentation size effects in aluminium (110) using nano-impact

材料科学 缩进 应变率 复合材料 消散 压痕硬度 纳米压痕 拉伤 法律工程学 微观结构 热力学 医学 物理 内科学 工程类
作者
Liguang Qin,Heng Li,Xiangru Shi,Ben D. Beake,Lin Xiao,James F. Smith,ZhengMing Sun,Jian Chen
出处
期刊:Mechanics of Materials [Elsevier BV]
卷期号:133: 55-62 被引量:33
标识
DOI:10.1016/j.mechmat.2019.03.008
摘要

Nano-impact, a high strain rate pendulum-based indentation technique, has been widely used to extract the local dynamic mechanical response of materials in repetitive contact. In contrast the analysis of single high strain rate impacts to obtain quantitative information on strain rate sensitivity is less well developed. A robust and reliable method for determining dynamic hardness at the nano- and micro-scale is highly desirable. In the present work, nano-impacts with different accelerating force and distance were carried out on a sample of single crystal Al (110) to study the dynamic hardness and its size effects. The common energy-based approach for dynamic hardness has been compared with an approach using Meyer's hardness corresponding to the ratio of the recorded peak force and the projected area of the indentation. It was found that both methods showed broadly similar values at larger penetration depth, but the energy approach became less reliable at the low impacting energy due to unavoidable energy dissipation in the system. Dynamic indentation size effects have been identified which were more pronounced than those in quasi-static indentation tests. This dynamic effect has been attributed to the localized strain caused by the high strain rate and its rapid change during contact. At the highest impact energies studied a transition into strain softening was also identified which is probably due to the adiabatic effects caused by the localized strain under severe impacting conditions.
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
量子星尘发布了新的文献求助10
刚刚
刻苦冰颜发布了新的文献求助10
1秒前
1秒前
queen814完成签到,获得积分10
1秒前
2秒前
兰天完成签到,获得积分10
2秒前
陌路孤星完成签到,获得积分10
2秒前
xiaoyuan发布了新的文献求助10
3秒前
开朗的寄灵发布了新的文献求助150
3秒前
tyy发布了新的文献求助10
4秒前
4秒前
儒雅谷芹发布了新的文献求助10
5秒前
5秒前
机智思真发布了新的文献求助10
5秒前
yufanhui应助Wangyingjie5采纳,获得10
5秒前
ED应助_Charmo采纳,获得10
5秒前
666完成签到,获得积分10
5秒前
乔迎晓发布了新的文献求助10
6秒前
celine123发布了新的文献求助10
7秒前
7秒前
7秒前
从容的春天完成签到,获得积分10
7秒前
王心茹完成签到,获得积分20
7秒前
聪慧小霜应助梓榆采纳,获得10
7秒前
传奇3应助Xiang采纳,获得10
8秒前
毛毛完成签到,获得积分10
8秒前
上官若男应助xiaoyuan采纳,获得10
8秒前
666发布了新的文献求助10
9秒前
9秒前
9秒前
自由的从梦完成签到,获得积分10
9秒前
10秒前
10秒前
你没事吧发布了新的文献求助10
11秒前
tyy完成签到,获得积分10
11秒前
11秒前
淡淡代玉发布了新的文献求助10
11秒前
12秒前
12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 3974358
求助须知:如何正确求助?哪些是违规求助? 3518706
关于积分的说明 11195521
捐赠科研通 3254897
什么是DOI,文献DOI怎么找? 1797614
邀请新用户注册赠送积分活动 877011
科研通“疑难数据库(出版商)”最低求助积分说明 806128