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andyany 發表于 2015-4-15 13:09 ![]()
) g& A+ _5 C+ o* S/ s8 f9 t( @我的理解是,固溶說的是高溫保持,退火強調的變溫速度。9 D8 I6 `* f1 F( h9 R
你這一段是你的觀點嗎?還是來自手冊或標準?# I1 |0 p/ b" ~" \1 ~- L
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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,體現出來就是軟且延伸性好。我一直認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,只是一種達到目的的工藝。' Y# \/ n+ { u/ r; P
我的觀點,來自該篇論文THE HEAT TREAT DOCTOR: Stainless Steels Part Two: Heat0 G, G( [! b) _# h: i5 N6 G
Treatment Techniques
; Z2 e! @1 H, ?4 v% \這篇文章的參照如下:# d* p7 Q- f) g( m7 H
References:
- k7 ~8 h( o1 ~: V! A% _/ ^1. Stainless Steel Handbook, Allegheny Ludlum Steel Corporation9 i4 W `: S" N0 e; O5 t4 G/ @$ V
2. The A-Z of Materials, www.azom.com.; v* K6 I4 U: B8 v4 C1 {& q# `
3. ASM Handbook, Vol. 4: Heat Treating, ASM International, 1991.
% B7 j5 |2 f& z d/ G7 e4. Chandler, Harry editor, Heat Treater’s Guide, 2nd Edition, ASM International, 1995.% \8 v4 u- ?/ N$ m1 w8 w5 H
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以下是論文中對于退火的具體闡述部分。
: d0 Q& c2 N4 gAnnealing
4 _( s/ A [& Y$ O% c; N! VA number of different annealing methods (full, isothermal, subcritical) are commonly$ T3 o3 I) `4 S! P* v, {9 c
used for stainless steel. Austenitic stainless steels cannot be hardened by heat
% j6 j5 _* I- ^; e$ s* b, otreatment, but they do harden by cold working. Annealing not only allows7 T6 J! l" }& ^
recrystallization of the work hardened grains but also places chromium carbides
3 F, r r9 G# K* e(precipitated at grain boundaries) back into solution. Annealing can also be used for1 c& z7 x9 G- G5 j* F
homogenization of castings or welds, and to relieve stresses from cold working., L7 S( \0 K/ c0 m4 N3 [
Annealing temperatures usually are above 1900°F (1040°C), although some stainless+ @4 I; y) ^ c0 G8 u* K. P
steel types may be annealed at closely controlled temperatures as low as 1850°F3 `7 g S6 B( H" ^5 r' ?& w% O
(1010°C) when fine grain size is desired. Time at temperature is often kept short to% X) }% U: M# q$ ~
minimize surface oxidation and to control grain growth, which may lead to a surface' [3 v3 {' Z/ P1 f8 }2 h5 p8 h8 {
phenomenon called "orange peel." |
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