中国激光, 2017, 44 (9): 0902001, 网络出版: 2017-09-07 复制并引用该论文  本文已被引 17 次  被引通知

图 & 表

图 1. SLM成形TC4钛合金圆柱状拉伸件

Fig. 1. Cylindrical drawing part of TC4 titanium alloy formed by SLM

下载图片 查看原文

图 2. SLM成形TC4钛合金拉伸件实物图

Fig. 2. Physical picture of drawing part of TC4 titanium alloy formed by SLM

下载图片 查看原文

图 3. 未热处理试样的微观组织。(a) OM照片(亮色部分为α'相,暗色部分为β相);(b) SEM照片

Fig. 3. Microstructure of untreated sample. (a) OM photo (light part is α' phase and dark part is β phase); (b) SEM photo

下载图片 查看原文

图 4. 840 ℃/2 h/AC退火处理后TC4钛合金的显微组织。(a) OM照片(亮色部分为α相,暗色部分为β相);(b) SEM照片

Fig. 4. Microstructure of TC4 titanium alloy after 840 ℃/2 h/AC annealing treatment. (a) OM photo (light part is α phase and dark part is β phase); (b) SEM photo

下载图片 查看原文

图 5. 940 ℃/1 h/WQ固溶处理后TC4钛合金的显微组织。(a) OM照片(亮色部分为α相,暗色部分为β相);(b) SEM照片

Fig. 5. Microstructure of TC4 titanium alloy after 940 ℃/1 h/WQ solution hardening. (a) OM photo(light part is α phase and dark part is β phase); (b) SEM photo

下载图片 查看原文

图 6. 940 ℃/1 h/WQ+540 ℃/4 h/AC固溶时效处理后TC4钛合金的显微组织。 (a) OM照片(亮色部分为α相,暗色部分为β相);(b) SEM照片

Fig. 6. Microstructure of TC4 titanium alloy after 940 ℃/1 h/WQ+540 ℃/4 h/AC solution and aging treatment. (a) OM photo (light part is α phase and dark part is β phase); (b) SEM photo

下载图片 查看原文

图 7. 不同热处理工艺下SLM成形TC4钛合金试样XRD图谱

Fig. 7. XRD patterns of TC4 titanium alloy samples produced by SLM after different heat treatment processes

下载图片 查看原文

图 8. 不同热处理工艺下试样的断口形貌。(a)未热处理;(b) 840 ℃/2 h/AC; (c) 940 ℃/1 h/WQ;(d) 940 ℃/1 h/WQ+540 ℃/4 h/AC

Fig. 8. Fracture morphologies of samples after different heat treatment processes. (a) Untreated; (b) 840 ℃/2 h/AC; (c) 940 ℃/1 h/WQ; (d) 940 ℃/1 h/WQ+540 ℃/4 h/AC

下载图片 查看原文

图 9. TC4钛合金试样残余应力测量点示意图

Fig. 9. Schematic of residual stress measurement points on TC4 titanium alloy sample

下载图片 查看原文

图 10. 不同热处理工艺下TC4钛合金试样应力仿真。(a)未热处理;(b) 840 ℃/2 h/AC; (c) 940 ℃/1 h/WQ;(d) 940 ℃/1 h/WQ+540 ℃/4 h/AC

Fig. 10. Stress simulation of TC4 titanium alloy samples after different heat treatment processes. (a) Untreated; (b) 840 ℃/2 h/AC; (c) 940 ℃/1 h/WQ; (d) 940 ℃/1 h/WQ+540 ℃/4 h/AC

下载图片 查看原文

表 1Ti6Al4V粉末的化学成分(质量分数,%)

Table1. Chemical compositions of Ti6Al4V power (mass fraction, %)

Element Al V Fe C O N H Mo Mn Cu Sn Y Zr Ti Content 5.500-6.750 3.500-4.500 0.140 0.007 0.130 0.007 0.002 <0.050 <0.050 <0.050 <0.050 <0.050 <0.050 Bal.

查看原文

表 2TC4钛合金SLM成形参数

Table2. Parameters of TC4 titanium alloy formed by SLM

Parameter Laser power /W Scanning speed /(mm·s -1 ) Layer thickness /μm Value 180 1250 30

查看原文

表 3SLM成形TC4钛合金热处理条件

Table3. Heat treatment conditions for TC4 titanium alloy formed by SLM

Heat treatment mode Heat treatment condition Annealing 840 ℃/2 h/AC Solution hardening 940 ℃/1 h/WQ Solution and aging treatment 940 ℃/1 h/WQ+540 ℃/4 h/AC

查看原文

表 4不同热处理工艺下SLM成形TC4钛合金试样的力学性能

Table4. Mechanical properties of TC4 titanium alloy samples formed by SLM after different heat treatment processes

Heat treatment mode Tensile strength /MPa Yield strength /MPa Elongation /% Reduction of area /% No heat treatment 1130.55 1079.44 12.73 22.49 840 ℃/2 h/AC 954.84 927.16 18.95 31.44 940 ℃/1 h/WQ 880.67 841.37 15.95 15.36 940 ℃/1 h/WQ+540 ℃/4 h/AC 901.93 890.31 15.35 10.89

查看原文

表 5不同热处理工艺下SLM成形TC4钛合金试样的残余应力实测及仿真值

Table5. Measured and simulated residual stresses of TC4 titanium alloy samples formed by SLM after different heat treatment processes

Heat treatment mode Measured point Residual stress /MPa Measured Simulated Point 1 175.5 183 Point 2 258.4 260 Untreated Point 3 113.3 127 Point 4 106.1 115 Point 1 58.6 59 Point 2 72.0 76 840 ℃/2 h/AC Point 3 68.9 72 Point 4 59.3 55 Point 1 83.0 77 Point 2 94.3 95 940 ℃/1 h/WQ Point 3 82.6 91 Point 4 73.1 71 Point 1 47.1 41 Point 2 59.9 55 940 ℃/1 h/WQ +540 ℃/4 h/AC Point 3 49.5 51 Point 4 41.0 40

查看原文

肖振楠, 刘婷婷, 廖文和, 张长东, 杨涛. 激光选区熔化成形TC4钛合金热处理后微观组织和力学性能[J]. 中国激光, 2017, 44(9): 0902001. Xiao Zhennan, Liu Tingting, Liao Wenhe, Zhang Changdong, Yang Tao. Microstructure and Mechanical Properties of TC4 Titanium Alloy Formed by Selective Laser Melting After Heat Treatment[J]. Chinese Journal of Lasers, 2017, 44(9): 0902001.