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Cr含量对激光增材制造12CrNi2合金钢的组织结构的影响
Alternative TitleEffect of Cr-Contenton Microstructure of 12CrNi2 Alloy Steel Preparedby Laser Additive Manufacturing
董志宏1; 亢红伟2; 谢玉江1; 迟长泰1; 彭晓3
2018
Source Publication材料研究学报
ISSN1005-3093
Volume32.0Issue:011Pages:827-833
Abstract对商用12CrNi2合金钢粉末进行激光增材制造时发现,在沉积态合金钢内部产生了大量的孔洞。这种孔洞的形成,主要与溶池中的O与C反应生成的气泡有关。合金钢粉末中增加Cr量后,它因与O亲和力大而在溶池中优先“捕捉”O析出Cr2O3,有效地抑制了成形合金钢中孔洞的形成;Cr2O3的析出使成形合金钢铁素体和奥氏体的组织细化,提高了合金钢的显微硬度。
Other Abstract12CrNi2 alloy steel has been prepared by means of laser additive manufacturing(LAM)using a commercial alloy steel powder. The results show that the LAMed alloy steel contains a large number of pores intrinsically associated with the reaction of O and C, which form gases in molten pool of the laser melting alloy steel powder. The pore formation can be highly suppressed by adding into the steel powder with small amounts of Cr, because it preferentially reacts with O to form Cr2O3 and consequently prevents the gases formation in the molten pool. The Cr2O3 formation also refines the ferrite and the austenite phases of the LAMed alloy steel and increases its hardness.
Keyword金属材料 组织结构 激光增材制造 Cr含量 合金钢
Indexed ByCSCD
Language中文
CSCD IDCSCD:6383016
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/155918
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.中国科学技术大学
3.南昌航空大学
Recommended Citation
GB/T 7714
董志宏,亢红伟,谢玉江,等. Cr含量对激光增材制造12CrNi2合金钢的组织结构的影响[J]. 材料研究学报,2018,32.0(011):827-833.
APA 董志宏,亢红伟,谢玉江,迟长泰,&彭晓.(2018).Cr含量对激光增材制造12CrNi2合金钢的组织结构的影响.材料研究学报,32.0(011),827-833.
MLA 董志宏,et al."Cr含量对激光增材制造12CrNi2合金钢的组织结构的影响".材料研究学报 32.0.011(2018):827-833.
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