Change of the machined hole wall surface roughness, microstructure and microhardness of low alloy steel caused by drill-guide-pads during BTA deep hole drilling. - Li, Binghao; Huang, Chuanzhen; Chen, Zhen; Liu, Hanlian; Niu, Jiahui; Wang, Jun; Wang, Zhen; Xu, Longhua; Huang, Shuiquan (International Journal of Advanced Manufacturing Technology, 2025)