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andyany 發(fā)表于 2015-4-15 13:09 ![]()
* L% u- S) {$ z! f7 n& ^我的理解是,,固溶說的是高溫保持,,退火強調(diào)的變溫速度。
2 Y) w N9 i& p你這一段是你的觀點嗎,?還是來自手冊或標(biāo)準(zhǔn),?
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固溶是有退火效果的,爐子里出來的鋼絲組織均勻,,韌性好而強度低,,體現(xiàn)出來就是軟且延伸性好。我一直認(rèn)為所謂固溶還是退火,,都是針對材料組織來討論的,,高溫保持或者冷卻速率等,,只是一種達(dá)到目的的工藝,。 S& M* p0 z) d6 C5 i- \0 F- Z
我的觀點,來自該篇論文THE HEAT TREAT DOCTOR: Stainless Steels Part Two: Heat
7 m$ {; L. I: o( {" O/ wTreatment Techniques
. L0 _! R' T8 ~! p9 C6 H這篇文章的參照如下:
4 V$ v/ |6 E% l( s' R3 F& iReferences:
. u7 O7 M: {( h. y; I$ R1. Stainless Steel Handbook, Allegheny Ludlum Steel Corporation
u( X6 [4 F5 \+ b& t2. The A-Z of Materials, www.azom.com.. h5 l& [; K. G4 v7 O
3. ASM Handbook, Vol. 4: Heat Treating, ASM International, 1991.( w6 q5 l5 ?# a) i/ s
4. Chandler, Harry editor, Heat Treater’s Guide, 2nd Edition, ASM International, 1995.6 l+ ~, ^1 i. I5 G0 c. G! s
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以下是論文中對于退火的具體闡述部分,。
& o+ Y$ N& m: ~. T' y: uAnnealing& b4 j: h) C! W) V# B' o/ t3 |. N
A number of different annealing methods (full, isothermal, subcritical) are commonly- e G4 v1 P7 {
used for stainless steel. Austenitic stainless steels cannot be hardened by heat
+ c2 \4 Q9 w8 f \/ T2 N& gtreatment, but they do harden by cold working. Annealing not only allows
7 q6 a% i5 V4 u' y- R) w3 qrecrystallization of the work hardened grains but also places chromium carbides9 t3 N! C/ ^# C, b$ a+ c
(precipitated at grain boundaries) back into solution. Annealing can also be used for8 V7 N; ]; b$ c3 j( c, Y
homogenization of castings or welds, and to relieve stresses from cold working.2 ]3 l9 @% X5 I
Annealing temperatures usually are above 1900°F (1040°C), although some stainless
9 }0 Q. w" E# D% v( ?steel types may be annealed at closely controlled temperatures as low as 1850°F, \6 i' s. |5 Y) e& }, e: }2 c# i+ v
(1010°C) when fine grain size is desired. Time at temperature is often kept short to
& `' r2 V3 f6 g) ?minimize surface oxidation and to control grain growth, which may lead to a surface
0 ~' b$ y! P8 ?9 U/ rphenomenon called "orange peel." |
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