选区激光熔化成形316L不锈钢微观组织及拉伸性能分析

尹燕<sup>1</sup>,刘鹏宇<sup>1</sup>,路超<sup>2</sup>,肖梦智<sup>1,3</sup>,张瑞华<sup>2,3</sup>

doi:10.12073/j.hjxb.2018390205

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

选区激光熔化成形316L不锈钢微观组织及拉伸性能分析

尹燕¹,刘鹏宇¹,路超²,肖梦智^1,3,张瑞华^2,3

文章导航 > 焊接学报 > 2018 > 39(8): 77-81

尹燕1,刘鹏宇1,路超2,肖梦智1,3,张瑞华2,3. 选区激光熔化成形316L不锈钢微观组织及拉伸性能分析[J]. 焊接学报, 2018, 39(8): 77-81. doi: 10.12073/j.hjxb.2018390205

引用本文:

尹燕¹,刘鹏宇¹,路超²,肖梦智^1,3,张瑞华^2,3. 选区激光熔化成形316L不锈钢微观组织及拉伸性能分析[J]. 焊接学报, 2018, 39(8): 77-81. doi: 10.12073/j.hjxb.2018390205

YIN Yan1, LIU Pengyu1, LU Chao2, XIAO Mengzhi1,3, ZHANG Ruihua2,3. Microstructure and tensile properties of selective laser melting forming 316L stainless steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(8): 77-81. doi: 10.12073/j.hjxb.2018390205

Citation:

YIN Yan¹, LIU Pengyu¹, LU Chao², XIAO Mengzhi^1,3, ZHANG Ruihua^2,3. Microstructure and tensile properties of selective laser melting forming 316L stainless steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(8): 77-81. doi: 10.12073/j.hjxb.2018390205

选区激光熔化成形316L不锈钢微观组织及拉伸性能分析

doi: 10.12073/j.hjxb.2018390205

尹燕¹,刘鹏宇¹,路超²,肖梦智^1,3,张瑞华^2,3

1. 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050;
2. 中国钢研科技集团有限公司, 北京 100081;
3. 阳江市五金刀剪产业技术研究院, 阳江 529533

基金项目: 广东省2015年省前沿与关键技术创新专项资金资助项目（重大科技专项）资助项目（2015B010123002）；阳江市2015年度新型研发机构建设、工程技术研究开发中心建设、企业实验室专项资金资助项目（2015019）；阳江2016年科技发展专项资金资助项目（协同创新与平台环境建设方向）资助项目（2060502）；兰州理工大学学生科技创新基金资助项目（S20）

Microstructure and tensile properties of selective laser melting forming 316L stainless steel

YIN Yan¹, LIU Pengyu¹, LU Chao², XIAO Mengzhi^1,3, ZHANG Ruihua^2,3

1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;
2. China Iron & Steel Research Institute Group, Beijing 100081, China;
3. Hardware Knife Cut Industrial Technology Research Institute Yangjiang, Yangjiang 529533, China

摘要: 采用选区激光熔化技术制备了316L不锈钢的拉伸试样，分析了试样不同区域的组织特征，测试了其拉伸力学性能.结果表明，其组织形貌主要为胞状晶，但在某些“微熔池”内晶粒生长方向不相同，而近乎相互垂直，从而在同一视野中显示出典型的细小柱状晶（亚晶）和近似六边形“胞晶”共存的组织特征.试样的抗拉强度与传统工艺制备的相比有较大提高，但断后收缩率有所降低.这主要由于选区激光熔化是快速熔化与冷却凝固的过程，其选区熔化的特征使得不同区域的激光入射角度、选区熔化扫描方式、“熔池”散热条件各不相同，导致不同区域呈现复杂的结晶过程，形成不同特征的微区组织.由于冷却速度较快所得的细小柱状晶的直径为亚微米级，致密分布，显著提高了材料的抗拉强度.但由于晶粒生长明显的方向性，使得拉伸过程中晶粒在不同方向的塑性变形不均匀，相互牵制，加之大量熔合线界面处不可避免的内应力，导致断后收缩率有所降低.
- 选区激光熔化 /
- 不锈钢 /
- 微观组织 /
- 拉伸性能
Abstract: The selective laser melting technology shows great advantages in the field of manufacturing of complex parts, but the organization and the comprehensive performance of the specimens have yet to be further optimized. Specimens of 316L stainless steel were fabricated by selective laser melting technology, the microstructure characteristics of different regions were analyzed, the tensile mechanical properties were tested. The results showed that the micro-structure were mainly cell crystal. However, the grain growth direction were different in some "micro-melting pools", and almost perpendicular to each other, which showed a small typical columnar crystal in the same field of view (subgrain) and "hexagonal cellular crystal" coexistence of micro-structure characteristics. Compared with the traditional specimens, the tensile strength of had greatly improved, but the elongation decreased. This was mainly due to the fact that SLM was a process of rapid melting and solidification which maked the difference of laser incident angle, scanning strategy and heat dissipation conditions resulting in complex crystals at different regions and different microstructure. The fine columnar crystal formed by rapid cooling that was submicron order and densely distribute was the main reason of the increases in tensile strength. However, the obvious anisotropy of grain, which resulted in the uneven deformation of grain in different directions and restrained mutually during the tensile test, and the inevitable remarkable internal stress at the interface of fusion lines leaded to a decrease in elongation.
- selective laser melting /
- stainless steel /
- microstructure /
- tensile properties

[1]	魏青松, 文世峰. 粉末激光熔化增材制造技术[M]. 武汉, 华中科技大学出版社, 2013.
[2]	吴怀宇. 3D打印:三维智能数字化创造[M]. 北京, 电子工业出版社, 2014.
[3]	康凯. 选区激光成形用18Ni -300粉末特性及成形件组织结构的研究[D]. 重庆, 重庆大学, 2014.
[4]	(美)胡迪·利普森梅尔芭·库曼. 3D打印:从想象到现实[M]. 赛迪研究院专家组, 译. 北京, 中信出版社出版社, 2014.
[5]	Rehme O, Emmelmann C. Reproducibility for properties of selective laser melting products[C]//Proceedings of the Third International WLTConference on Lasers in Manufacturing, 2005:1-6.
[6]	孙晓. 选区激光成形用IN718合金粉末特性及成形件组织结构的研究[D]. 重庆, 重庆大学, 2014.
[7]	崔忠圻覃耀春. 金属学与热处理[M]. 北京, 机械工业出版社, 2007.

[1]	陈彦兴, 刘秀国, 赵洋洋, 龚宝明, 王颖, 利成宁. SLM成形17-4PH不锈钢微观组织与动态断裂性能 . 焊接学报, 2023, 44(2): 1-9. doi: 10.12073/j.hjxb.20220306001
[2]	张楠, 张海武, 王淼辉, 杜兵, 张平, 张志豪. 微米级选区激光熔化316L不锈钢拉伸变形中Σ3ⁿ特殊晶界的分布 . 焊接学报, 2023, 44(1): 33-39. doi: 10.12073/j.hjxb.20220106003
[3]	徐榕蔚, 张振杰, 刘清原, 张光辉, 龙芋宏. 选区激光熔化制备多孔结构的成形偏差及力学性能与压缩失效分析 . 焊接学报, 2022, 43(10): 49-56. doi: 10.12073/j.hjxb.20211005001
[4]	牛小男, 崔丽, 王鹏, 贺定勇, 曹庆. 镍铝青铜过渡层对钛合金/不锈钢异种材料激光焊接头组织与力学性能的影响 . 焊接学报, 2022, 43(1): 42-47. doi: 10.12073/j.hjxb.20210722002
[5]	张可召, 蔡嘉梦, 刘栋, 陈锦伊, 包晔峰, 牛红志. 送丝速度对Ti-3Al-6Mo-2Fe-2Zr钛合金激光填丝焊接头组织与性能的影响 . 焊接学报, 2022, 43(12): 35-40. doi: 10.12073/j.hjxb.20211106001
[6]	朱明冬, 吴冰洁, 曹立彦, 李彦儒, 张润豪, 吴佳玥. 304LN不锈钢表面激光熔覆钴基合金组织和性能 . 焊接学报, 2022, 43(8): 48-53, 86. doi: 10.12073/j.hjxb.20220508001
[7]	巴培培, 董志宏, 张炜, 彭晓. 选区激光熔化成形12CrNi2合金钢的显微组织和力学性能 . 焊接学报, 2021, 42(8): 8-17. doi: 10.12073/j.hjxb.20210323003
[8]	张宇, 姜云, 胡晓安. 选区激光熔化成形Inconel 625合金的激光焊接头组织及高温蠕变性能 . 焊接学报, 2020, 41(5): 78-84. doi: 10.12073/j.hjxb.20191211001
[9]	闫丽静, 周敏波, 赵星飞. 凝固条件和应变速率对Sn-58Bi钎料拉伸性能和断裂行为的影响 . 焊接学报, 2019, 40(5): 79-83. doi: 10.12073/j.hjxb.2019400131
[10]	许飞,陈俐,郭路云. 填充焊丝对6A02铝合金光纤激光焊接接头组织性能的影响 . 焊接学报, 2018, 39(8): 92-96. doi: 10.12073/j.hjxb.2018390208
[11]	赵小康1,曹睿1,张晓波1,张瑞华2,陈剑虹1. 千层钢组织和力学性能分析 . 焊接学报, 2018, 39(1): 45-49. doi: 10.12073/j.hjxb.2018390011
[12]	徐雅晨1,2,荆洪阳1,2,韩永典1,2,徐连勇1,2. 不同环境下X65管线钢摩擦塞焊搭接焊接头组织和力学性能分析 . 焊接学报, 2017, 38(9): 55-60. doi: 10.12073/j.hjxb.20170206001
[13]	赵东升, 闫久春, 黄震宇, 刘玉君. 钛合金与不锈钢真空热轧连接界面微观结构及性能 . 焊接学报, 2016, 37(12): 53-56.
[14]	何恩光, 巩水利, 杨涛, 陈俐. 5A90铝锂合金T形接头激光填丝焊接头组织性能分析 . 焊接学报, 2013, (9): 99-102.
[15]	张红霞, 裴飞飞, 王志斌, 王文先, 张心保, 闫志峰. 热输入对超薄443铁素体不锈钢组织性能的影响 . 焊接学报, 2013, (4): 15-18,34.
[16]	张勤练, 林三宝, 范成磊, 杨春利. 不锈钢超声-脉冲TIG焊缝的组织与性能 . 焊接学报, 2012, (12): 61-64.
[17]	董红刚, 杨丽群, 翟南, 董闯. 药芯焊丝焊接铝合金/不锈钢接头组织及性能分析 . 焊接学报, 2011, (10): 1-4.
[18]	周留成, 周磊, 李应红, 汪诚. 激光冲击强化对不锈钢焊接接头拉伸性能的影响 . 焊接学报, 2011, (4): 52-54,58.
[19]	李明高, 孙大谦, 邱小明, 刘卫红. TiNi形状记忆合金与不锈钢激光钎焊AgCuZnSn钎料的研制 . 焊接学报, 2005, (7): 44-48.
[20]	赵慧杰, 何松, 耿洪滨. 真空热循环作用下LF6合金焊接接头的拉伸性能和微观组织 . 焊接学报, 2004, (1): 33-35,39.

点击查看大图

计量

文章访问数: 932
HTML全文浏览量: 23
PDF下载量: 86
被引次数: 0

选区激光熔化成形316L不锈钢微观组织及拉伸性能分析

doi: 10.12073/j.hjxb.2018390205

尹燕¹,刘鹏宇¹,路超²,肖梦智^1,3,张瑞华^2,3

1. 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050;
2. 中国钢研科技集团有限公司, 北京 100081;
3. 阳江市五金刀剪产业技术研究院, 阳江 529533

收稿日期: 2017-04-28

关键词:

选区激光熔化 /

不锈钢 /

微观组织 /

拉伸性能

摘要: 采用选区激光熔化技术制备了316L不锈钢的拉伸试样，分析了试样不同区域的组织特征，测试了其拉伸力学性能.结果表明，其组织形貌主要为胞状晶，但在某些“微熔池”内晶粒生长方向不相同，而近乎相互垂直，从而在同一视野中显示出典型的细小柱状晶（亚晶）和近似六边形“胞晶”共存的组织特征.试样的抗拉强度与传统工艺制备的相比有较大提高，但断后收缩率有所降低.这主要由于选区激光熔化是快速熔化与冷却凝固的过程，其选区熔化的特征使得不同区域的激光入射角度、选区熔化扫描方式、“熔池”散热条件各不相同，导致不同区域呈现复杂的结晶过程，形成不同特征的微区组织.由于冷却速度较快所得的细小柱状晶的直径为亚微米级，致密分布，显著提高了材料的抗拉强度.但由于晶粒生长明显的方向性，使得拉伸过程中晶粒在不同方向的塑性变形不均匀，相互牵制，加之大量熔合线界面处不可避免的内应力，导致断后收缩率有所降低.

English Abstract

Microstructure and tensile properties of selective laser melting forming 316L stainless steel

YIN Yan¹, LIU Pengyu¹, LU Chao², XIAO Mengzhi^1,3, ZHANG Ruihua^2,3

1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;
2. China Iron & Steel Research Institute Group, Beijing 100081, China;
3. Hardware Knife Cut Industrial Technology Research Institute Yangjiang, Yangjiang 529533, China

Received Date: 2017-04-28

Keywords:

Abstract: The selective laser melting technology shows great advantages in the field of manufacturing of complex parts, but the organization and the comprehensive performance of the specimens have yet to be further optimized. Specimens of 316L stainless steel were fabricated by selective laser melting technology, the microstructure characteristics of different regions were analyzed, the tensile mechanical properties were tested. The results showed that the micro-structure were mainly cell crystal. However, the grain growth direction were different in some "micro-melting pools", and almost perpendicular to each other, which showed a small typical columnar crystal in the same field of view (subgrain) and "hexagonal cellular crystal" coexistence of micro-structure characteristics. Compared with the traditional specimens, the tensile strength of had greatly improved, but the elongation decreased. This was mainly due to the fact that SLM was a process of rapid melting and solidification which maked the difference of laser incident angle, scanning strategy and heat dissipation conditions resulting in complex crystals at different regions and different microstructure. The fine columnar crystal formed by rapid cooling that was submicron order and densely distribute was the main reason of the increases in tensile strength. However, the obvious anisotropy of grain, which resulted in the uneven deformation of grain in different directions and restrained mutually during the tensile test, and the inevitable remarkable internal stress at the interface of fusion lines leaded to a decrease in elongation.

尹燕1,刘鹏宇1,路超2,肖梦智1,3,张瑞华2,3. 选区激光熔化成形316L不锈钢微观组织及拉伸性能分析[J]. 焊接学报, 2018, 39(8): 77-81. doi: 10.12073/j.hjxb.2018390205

引用本文:

尹燕¹,刘鹏宇¹,路超²,肖梦智^1,3,张瑞华^2,3. 选区激光熔化成形316L不锈钢微观组织及拉伸性能分析[J]. 焊接学报, 2018, 39(8): 77-81. doi: 10.12073/j.hjxb.2018390205

Citation:

全文HTML

参考文献 (7)

下载: 全尺寸图片幻灯片

返回文章

用微信扫码二维码

分享至好友和朋友圈

留言板

选区激光熔化成形316L不锈钢微观组织及拉伸性能分析

doi: 10.12073/j.hjxb.2018390205

Microstructure and tensile properties of selective laser melting forming 316L stainless steel

计量

出版历程

选区激光熔化成形316L不锈钢微观组织及拉伸性能分析

doi: 10.12073/j.hjxb.2018390205

1. 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050;2. 中国钢研科技集团有限公司, 北京 100081;3. 阳江市五金刀剪产业技术研究院, 阳江 529533

English Abstract

Microstructure and tensile properties of selective laser melting forming 316L stainless steel

全文HTML

目录

1. 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050;
2. 中国钢研科技集团有限公司, 北京 100081;
3. 阳江市五金刀剪产业技术研究院, 阳江 529533