Porosity yog ib qho teeb meem uas nquag ntsib thaum vuam Ti6AL4V titanium daim hlau thiab cov hlab. Lub hauv paus ua rau porosity tsim yog vim muaj kev cuam tshuam ntawm hydrogen. Qhov tsim ntawm porosity nyob rau hauv cov hlau weld feem ntau cuam tshuam rau lub zog qaug zog ntawm kev sib koom tes. Hydrogen yog lub ntsiab ua rau mob khaub thuas tawg thiab porosity tsim. Vim tias hydrogen tsawg dua 300 degree, solubility nyob rau hauv alpha theem yog me me, nrog ib tug limiting solubility ntawm tsuas yog 0.002% ntawm chav tsev kub. Thaum lub vuam los yog qhov kub-txhim kho thaj tsam yog txias rau hauv qab 300 degree tom qab vuam, lub oversaturated hydrogen yog precipitated nyob rau hauv daim ntawv ntawm titanium hydride (theem). Ua kom raug xaiv cov txheej txheem vuam tsis tu ncua kom tshem tawm qhov chaw ntawm qhov vuam, qhov chaw ntawm cov hlau ntawm daim tawv nqaij oxide, roj thiab lwm yam khoom siv organic. Tswj qhov ntws ntawm argon roj thiab ntws tus nqi kom tsis txhob muaj kev kub ntxhov, cuam tshuam cov nyhuv ntawm kev tiv thaiv inflatable. Kev siv phau ntawv tungsten argon arc vuam titanium alloy vuam kev kho qhov tawg yog ua tau, tuaj yeem tau txais txiaj ntsig zoo.
Tshuaj muaj pes tsawg leeg
|
Qib |
N |
C |
H |
Fe |
O |
Al |
V |
Pa |
Mo |
|
Ni |
Ti |
Gr1 |
0.03 |
0.08 |
0.015 |
0.2 |
0.18 |
/ |
/ |
|
/ |
/ |
/ |
bal |
Gr 2 |
0.03 |
0.08 |
0.015 |
0.3 |
0.25 |
|
/ |
/ |
/ |
/ |
/ |
bal |
Gr 3 |
0.05 |
0.08 |
0.015 |
|
0.3 |
0.35 |
/ |
/ |
/ |
/ |
/ |
bal |
Gr4 |
0.05 |
|
0.08 |
0.015 |
0.5 |
0.4 |
/ |
/ |
/ |
/ |
/ |
|
|
Gr 5 |
0.05 |
0.08 |
0.015 |
0.4 |
0.2 |
5.5~6.75 |
3.5~4.5 |
/ |
/ |
|
/ |
bal |
gr 7 |
0.03 |
0.08 |
0.015 |
0.3 |
0.25 |
/ |
/ |
|
0.12~0.25 |
/ |
/ |
bal |
gr9 ua |
0.03 |
0.08 |
0.015 |
0.25 |
0.15 |
