Laser welding study of vacuum sintered HUST-1 lunar regolith simulant

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外文摘要：Efforts are underway to establish a permanent lunar base on the Moon.In situ lunar regolith is anticipated to be useful as a building material after sintering.However,sintering lunar regolith into a large-scale structure presents challenges.Therefore,the key to lunar construction lies in assembling multiple small-sized sintered modules into a stable,large-sized structure.This study explored the feasibility of welding the sintered HUST-1 lunar regolith simulant(HLRS)using a laser device and conducted experiments using lasers of varying power.The microstructure,mineral composition,element distribution,and shear strength of the welded joint were investigated.A few low-melting minerals were fused and vaporized during welding,leading to the generation of thermal decomposition gas.Furthermore,the welded joint exhibited numerous micro-cracks,pores,and bubbles,resulting in reduced weld shear strength.Finally,the influence of laser power on weld shear strength was investigated,revealing that the highest shear strength(15.69 N/cm)was achieved at a laser power of 1000 W.This study demonstrates the feasibility of laser welding of sintered HLRS for the first time,with potential applications in lunar base construction.

外文关键词：

lunar regolithvacuum sinteringlaser weldingweld shear strengthlunar base

作者：

HAN WenBin、DING LieYun、ZHOU Cheng、ZHOU Yan、DANG Fen

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作者单位：

National Center of Technology Innovation for Digital Construction,Huazhong University of Science and Technology,Wuhan 430074,China

School of Civil and Hydraulic Engineering,Huazhong University of Science and Technology,Wuhan 730074,China

基金：

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaStrategic Research and Consulting Project of the Chinese Academy of EngineeringStrategic Research and Consulting Project of the Chinese Academy of Engineering

项目编号：

2023YFB37113002021YFF05003002023-XZ-902023-JB-09-10

出版年：

2024

DOI：

10.1007/s11431-023-2675-0

中国科学:技术科学(英文版)

中国科学院

中国科学:技术科学(英文版)

CSTPCDEI

影响因子：1.056

ISSN：1674-7321

年,卷(期)：2024.67(9)